8 letters · 14 points in Scrabble
noun a farm machine for separating seeds or grain from the husks and straw
noun thrush-like American songbird able to mimic other birdsongs
noun large pelagic shark of warm seas with a whiplike tail used to round up small fish on which to feed
originOriginally a variant of thresher; equivalent to thrash + -er.
Etymology from Wiktionary, CC BY-SA 3.0