Definition of bilked:
(v) :
(transitive) To do someone out of their due; to deceive or defraud, to cheat (someone).
(v) :
(intransitive, UK) To steal fuel from a self-service filling station by driving away without paying after filling the fuel tank or other container; to commit a drive-off.
(n) :
(cribbage) The spoiling of someone's score in the crib.
(v) :
(transitive) To spoil the score of (someone) in cribbage.
(n) :
(obsolete) A deception, a hoax.
(n) :
(obsolete) A cheat or swindler.