rook
Concise Oxford English Dictionary © 2008 Oxford University Press:
rook1
▶noun a gregarious crow with black plumage and a bare face, nesting in colonies in treetops. [Corvus frugilegus.] ▶verb informal defraud, swindle, or overcharge.
– origin OE hrōc, prob. imitative and of Gmc origin.
Concise Oxford English Dictionary © 2008 Oxford University Press:
rook2
▶noun a chess piece, typically with its top in the shape of a battlement, that can move in any direction along a rank or file on which it stands.
– origin ME: from OFr. rock, based on Arab. ruḵḵ (of which the sense remains uncertain).
'rook' also found in these Oxford entries:

