7 letters · 7 points in Scrabble
noun a harsh or humorous critic (sometimes intended as a facetious compliment)
noun a cook who roasts food
noun flesh of a large young chicken over 3 1/2 lb suitable for roasting
originFrom Middle English roster, roostare, equivalent to roast + -er (agent noun suffix) or + -er (patient suffix). Same formation as roster, although the words have very different meanings.
Etymology from Wiktionary, CC BY-SA 3.0