From WordNet (r) 3.0 (2006):
flog
v 1: beat severely with a whip or rod; "The teacher often
flogged the students"; "The children were severely
trounced" [syn: flog, welt, whip, lather, lash,
slash, strap, trounce]
2: beat with a cane [syn: cane, flog, lambaste, lambast]