(construction) a method of interlocking metal panels in which one panel edge is folded back on top of itself and the other panel is folded under, after which the two panels are hooked together.

The state of being flat-chested; the state of having small breasts.

(Australia, idiomatic) At maximum capability, intensity, or speed.

(Australia, idiomatic) Extremely busy.

(computing) A data file containing usually one record per line.

A dry lake or playa whose level bed contains abundant salt.

(poker) To call a raise, as opposed to folding or reraising.

(poker) An instance of flat calling; a call.

plural of flat cap

plural of flat-earther