1. [late 16C+] to beat or strike; thus lambing/lamming n., a beating; lam out v., to lash out.
2. [mid–late 19C] (US) to defeat in a fight or sporting contest.
3. [late 19C] (Aus.) to swindle.
4. [1910s–40s] to throw, to toss, to smash against.
5. [1920s] in fig. use, to do perfunctorily, fast.
[mid-19C–1900s] to beat, to thrash.
1. [late 19C+] to beat up.
2. [late 19C+] to do something aggressively, wholeheartedly.
3. [1970s+] to attack verbally.