plural of wind-up

(idiomatic) Periods of positive and negative events, moods, or interactions; highs and lows. / Undulations.

plural of hold-up

(UK, colloquial) Women's stockings designed to be worn without suspenders.

plural of cover-up

plural of back-up

plural of higher-up

plural of line up

plural of square-up

(colloquial) A pair of miniature valves right next to each other on a wall, connecting through the wall to the household plumbing, used to provide water to a washing machine. (They are usually red and blue, with the red one delivering hot water and the blue one delivering cold water.)