(1):

(n.) A thwarting an adversary in cribbage by spoiling his score; a balk.

(2):

(n.) A cheat; a trick; a hoax.

(3):

(n.) Nonsense; vain words.

(4):

(n.) A person who tricks a creditor; an untrustworthy, tricky person.

(5):

(v. t.) To frustrate or disappoint; to deceive or defraud, by nonfulfillment of engagement; to leave in the lurch; to give the slip to; as, to bilk a creditor.