(1):

(n.) Counterfeit money.

(2):

(a.) To puzzle.

(3):

(a.) To ridicule; to banter; to rally.

(4):

(a.) To spoil the effect or success of, as by ridicule; to throw a wet blanket on; to spoil.

(5):

(a.) At variance with what is usual or normal; differing in some odd way from what is ordinary; odd; singular; strange; whimsical; as, a queer story or act.

(6):

(a.) Mysterious; suspicious; questionable; as, a queer transaction.