eyelash, lash, cilium -- (any of the short curved hairs that grow from the edges of the eyelids)
lash, thong -- (leather strip that forms the flexible part of a whip)
whip, lash, whiplash -- (a quick blow delivered with a whip or whiplike object; "the whip raised a red welt")
Overview of verb lash
The verb lash has 4 senses
flog, welt, whip, lather, lash, slash, strap, trounce -- (beat severely with a whip or rod; "The teacher often flogged the students"; "The children were severely trounced")
lash -- (lash or flick about sharply; "The lion lashed its tail")
whip, lash -- (strike as if by whipping; "The curtain whipped her face")
lash -- (bind with a rope, chain, or cord; "lash the horse")