To strike; to beat; to give a heavy or resounding blow to; to thrash; to make with whacks. [Colloq.] Rodsmen were whackingtheir way through willow brakes. G. W. Cable.
To strike anything with a smart blow. To whack away, to continue striking heavy blows; as, to whack away at a log. [Colloq.]
A smart resounding blow. [Colloq.]
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