(1):

(n.) A dollar.

(2):

(n.) Act or sound of plunking.

(3):

(v. t.) To pluck and release quickly (a musical string); to twang.

(4):

(v. t.) To throw, push, drive heavily, plumply, or suddenly; as, to plunk down a dollar; also, to hit or strike.

(5):

(v. t.) To be a truant from (school).

(6):

(v. i.) To make a quick, hollow, metallic, or harsh sound, as by pulling hard on a taut string and quickly releasing it; of a raven, to croak.

(7):

(n.) A large sum of money.

(8):

(v. i.) To drop or sink down suddenly or heavily; to plump.

(9):

(v. i.) To play truant, or "hooky".