(idiomatic) With the threat or negative prospect of; acting as a constant preoccupation.

Attend to your own defects before presuming to advise others about theirs.

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

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

plural of screw head

Alternative form of screwhead.