present participle of quick-freeze

The double time, a marching cadence (pace) approaching running speed.

(intransitive) To double-time, march (or rather run) at the above speedy pace.

Very quickly; at once; on the double.

A light exhibiting very rapid regular alternations of light and darkness, normally sixty flashes per minute.

plural of quick light

(idiomatic) Incredibly fast.

(idiomatic) Having one thing coming rapidly after another.

(idiomatic) Characterized by rapid response, as to a verbal remark or to a new situation; quick to act.

(climbing) A runner: a short sling with a karabiner on either end, used to link the climbing rope to a bolt, nut, Friend, or similar.