WordNet sense 1 ((chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard):

castle

WordNet sense 2 (deprive of by deceit):

bunco, con, defraud, diddle, goldbrick, mulct, scam, swindle, victimize, nobble, short-change, hornswoggle, gip

WordNet sense 3 (common gregarious Old World bird about the size and color of the American crow):

Corvus frugilegus