plural of heart sound

(medicine) Any of the noises that can be heard on auscultation over the heart, generated by the beating heart and the resultant flow of blood through it.

(slang, derogatory) Someone who smokes sherms (cigarettes dipped in phencyclidine (PCP)), which can damage his or her brain.

Alternative form of cannot but

A large, clumsy head; a blockhead; a dunce.

Having two heads. / (numismatics) Of a coin, having a head on both sides, especially when counterfeited by being constructed from two separate coins.

simple past tense and past participle of double-head

(rail transport) The use of two locomotives at the front, or head, of a train.

present participle of double-head

Having a prominent brow