(Belg. lamen.) To beat soundly; to drub. Colloquial in some of the Northern States. It is provincial in Yorkshire, England.--Willan's Glossary.
If Millwood were here, dash my wig,
Quoth he, I would beat her and lam her weel.--Rejected Addresses.
·vt To beat soundly; to <<Thrash>>. ...
Webster's Dictionary of the English Language