Definition of "sub"

sub¹

/sʌb/

noun
plural subs
1. Abbreviation of submarine.
  Quotations
  You know, we got Russian subs creepin' around; anythin' goes wrong they can say whatever they want happened! Give their folks medals!
  1989, James Cameron, The Abyss (motion picture), spoken by Alan "Hippy" Carnes (Todd Graff)
2. Short for submarine sandwich.: a sandwich made on a long bun.
3. (nautical) A submersible
4. (informal) Clipping of substitute., often in sports or teaching.
  Quotations
  At any other school you would be playing varsity, and Wallace has you pigeon-holed on the subs." "Maybe he has his reasons," Jim replied. "And he hasn't pigeon-holed me on the subs yet — not this season.
  1930, Boy's Live, Philip Scruggs, There Can Be Victory, page 20
5. (Britain, informal, often in plural) A subscription: a payment made for membership of a club, etc.
  Quotations
  According to the best available information, GALAXY has several times as many subs as any other science fiction magazine!
  1951, H. L. Gold, “Annual Report”, in Galaxy Science Fiction, volume 2, number 6, page 2
6. (Internet, informal) A subtitle.
7. (computing, programming) A subroutine (sometimes one that does not return a value, as distinguished from a function, which does).
  Quotations
  The default accessor can be overridden by declaring a sub of the same name in the package.
  2002, Nathan Patwardhan, Ellen Siever, Stephen Spainhour, Perl in a nutshell
  So far, all the subs and functions that we have used have been those built into the system, or those written to handle events from controls […]
  2004, P. K. McBride, Introductory Visual Basic.NET, page 49
8. (colloquial) A subeditor.
9. (colloquial) A subcontractor.
10. (slang) A subwoofer.
11. (publishing, colloquial) A submission (of a work for publication).
12. (BDSM, informal) A submissive.
  Quotations
  […] roleplay where a sub or bottom takes care of a top's bodily and hygiene needs […]
  2004, Paul Baker, Fantabulosa: A Dictionary of Polari and Gay Slang
  "It means that I'm both a sub and a dom." "Submissive and dominant," I said. He nodded.
  2007, Laurell K Hamilton, The Harlequin
  Typically a dom and a sub have a more or less standard routine that they like to go through all the time.
  2008, Lannie Rose, How to Change Your Sex
13. (colloquial, dated) A subordinate.
14. (colloquial, dated) A subaltern.
  Quotations
  He was known as 'Mad Carew' by the subs at Khatmandu,He was hotter than they felt inclined to tell;But for all his foolish pranks, he was worshipped in the ranks,And the Colonel's daughter smiled on him as well.
  1911, J. Milton Hayes, The Green Eye of the Yellow God
15. (colloquial, Internet) A subscription (or (by extension) a subscriber) to an online channel or feed.
16. (colloquial) Subsistence money: part of a worker's wages paid before the work is finished.
17. (Internet slang) Short for subreddit.
verb
third-person singular simple present subs, present participle subbing, simple past and past participle subbed
1. (US, informal) To substitute for.
2. (US, informal) To work as a substitute teacher, especially in primary and secondary education.
3. (Britain, informal, soccer) To replace (a player) with a substitute.
4. (Britain, informal, soccer, less common, often as "sub on") To bring on (a player) as a substitute.
5. (Britain) To perform the work of a subeditor or copy editor; to subedit.
6. (slang, Internet, transitive) To subtitle (usually a film or television program).
7. (UK, slang, transitive) To lend (a person) money.
  Quotations
  I kept up the pleasantries as we were drying our hands and, realizing I didn't have any change for the lodger, I asked him, one drummer to another like, if he could sub me a quid for the dish.
  2011, Rowland Rivron, What the F*** Did I Do Last Night?
8. (slang, intransitive) To subscribe.
9. (BDSM) To take a submissive role.
  Quotations
  You've never subbed before. Jessica will be expecting a man on stage that follows orders and enjoys what she's going to be doing. Do you want to be spanked? Possibly whipped?
  2012, Alicia White, Jessica's Breakdown, page 53
  Wasn't like she'd never subbed before. She'd been a sub longer than she'd been a Dominatrix–ten years she'd spent in a collar.
  2012, Tiffany Reisz, Little Red Riding Crop

sub²

/sʌb/

preposition
1. Under.
verb
third-person singular simple present subs, present participle subbing, simple past and past participle subbed
1. To coat with a layer of adhering material; to planarize by means of such a coating.
2. (microscopy) To prepare (a slide) with a layer of transparent substance to support and/or fix the sample.
  Quotations
  Ensure that gloves are worn when handling subbed slides. Although the following protocol describes subbing with gelatin, slides may also be coated with either 3-(triethoxysilyl-)propylamine (TESPA) or poly-L-lysine for in situ hybridization.
  1997, Marina A. Lynch, S. M. O'Mara (editors), Ali D. Hames, D. Rickwood (series editors), Neuroscience Labfax, page 166

Definition of "sub"

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sub2

preposition

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