Of footwear, having very low heels so that the foot is almost parallel to the ground; low-heeled.

plural of flat crossing

(rail transport, UK) A crossing where two railway lines cross each other on the same level.

Alternative spelling of flat-earthery

(derogatory, somewhat occasional) Advocacy for the belief that the earth is flat.

(uncountable, aviation, military, with the) A form of the scissors defensive maneuver in dogfighting, involving turning one's aircraft towards that of the attacker and slowing in order to force the opponent to overshoot, without moving out of the initial plane of the attack; often continues, with the roles of attacker and defender alternating between the two aircraft, until one is either shot down or manages to escape.

(aviation) An especially dangerous type of spin (abnormal stalled flight mode) with a very high angle of attack (typically between 65° and 90°), such that the aircraft's nose is pointed near the horizon despite an extreme negative flightpath angle (gamma); typically unresponsive to flight control inputs and unrecoverable in most aircraft.

plural of flat spin

(sociology) a lifestyle choice and social protest movement in China by some young people who reject societal pressures

A fold mirror that is a "flat", i.e. a plane mirror