Lam/læm/ Definition 1 of 4Pro Tip 1/3Informal Slang Used in casual conversation, not in polite or formal situations. He threatened to lam anyone disturbing his peace. Pro Tip 2/3Violence Connotation Implies a forceful, violent action; use cautiously to avoid promoting violence. In the movie, the hero lammed the villain for justice. Pro Tip 3/3Physical Action Refers to actual physical hitting, not a metaphor for non-physical acts. During the scrimmage, players started to lam each other.