Definition of "lam"

lam¹

/læm/

verb
third-person singular simple present lams, present participle lamming, simple past and past participle lammed
1. (transitive, informal) To beat or thrash.
  Quotations
  An' fo' I knowed it, he done picked up that bone an' lammed me ovah de head wid it.
  1930, Langston Hughes and Zora Neale Hurston, Mule Bone, Act II, Scene 2, in The Collected Works of Langston Hughes, Volume 5: The Plays to 1942: Mulatto to The Sun Do Move, edited by Leslie Catherine Sanders, Columbia: University of Missouri Press, 2002, p. 102
  They lammed each other on the head with great, clumsy stone hammers; but their skulls were so hard that the hammers bounced off again […]
  1953, C. S. Lewis, The Silver Chair, Collins, published 1998, Chapter
2. (intransitive, dated, slang) To flee or run away.
  Quotations
  [Gangster running away:] Batman and Robin! Let's lam!
  1947, Bill Finger, World's Finest Comics #30, "The Penny Plunderers!", p. 4
  […] and she was so mad and so down deep vindictive that she reported to the police some false trumped-up hysterical crazy charge, and Dean had to lam from Hoboken.
  1957, Jack Kerouac, chapter 1, in On the Road, Viking Press, part 1
noun
plural lams
1. (slang) flight, escape

lam²

/læm/

noun
plural lams
1. The twenty-third letter of the Arabic alphabet, ل‎ (l). It is preceded by ك‎ (k) and followed by م‎ (m).