(US) A room with a toilet, but no shower or bathtub, and typically no sink; a water closet.

(historical) A block on which the body of a condemned criminal was quartered.

plural of quarter-bloke

(vehicles) the small triangular-shaped side window on some vehicles.

(UK military slang, now rare) A quartermaster, or quartermaster sergeant.

(music) The musical interval equal to one quarter of a tone or 1/24 of an octave; half a semitone.

(history of numismatics) A British coin, produced for circulation in Ceylon 1839–1853, which, at a face value of ⅟₁₆d. (£⅟₃₈₄₀), is the lowest denomination of coin ever minted for the United Kingdom.

plural of quarter day

plural of quarter tone

An automaton, on a clock, that strikes a bell every quarter hour