Definition of "MC"

MC

noun
countable and uncountable, plural MCs or MC's
1. Initialism of master of ceremonies.
2. (music, slang) A rapper.
  Quotations
  Three MC's and one DJ / We be getting down with no delay
  1999, “Three MC’s and One DJ”, in Hello Nasty, performed by Beastie Boys
3. (knitting) Initialism of main colour.
  Quotations
  With MC, knit a row, purl a row.
  2011, Kristi Porter, Knitting Patterns For Dummies, page 91
4. Initialism of medical center.
5. (textiles) Initialism of matching colour.
6. (computing) Initialism of movie clip.
7. Initialism of methylene chloride. (dichloromethane)
8. Initialism of motorcycle club.
9. Initialism of mail code.
10. Initialism of main character.
11. Initialism of military cross.
12. (medicine, pathology) Initialism of molluscum contagiosum.
13. Initialism of member of congress.
14. Initialism of medical college.
15. (astronomy) Initialism of Mars-crosser.
16. (astrology) Initialism of medium coeli, the midheaven or highest point in the sky. Contrasted to Imum Coeli.
17. Initialism of male circumcision.
18. Initialism of medical certificate.
19. (electronics, audio) Initialism of moving coil, a type of phono cartridge.
verb
third-person singular simple present MCs, present participle MCing, simple past and past participle MCed
1. To emcee, to act as a master of ceremonies.
2. (music) To rap.
  Quotations
  British rapheads do not usually have a great appreciation for rap acts with a pop edge. And having credits that include a stint MCing for Belgium’s hugely successful pop-dance group Technotronic is something that’s best not mentioned in hip-hop circles.
  2000 August 19, Kwaku et al., “Keepin’ It Real around the World”, in Billboard, volume 112, number 34, page 40
proper noun
1. (video games, informal) Initialism of Minecraft.
2. (US military) Initialism of Marine Corps.
3. Abbreviation of Mastercard.
phrase
1. (text messaging) Initialism of Merry Christmas.