Rapidly; with speed; fast. / Very soon.

A fast foxtrot noted for its complex and intricate footwork.

To dance the quickstep. / To move with a hurried step.

Wet sand that appears firm but in which things readily sink, often found near rivers or coasts. / Anything that pulls one down or buries one metaphorically

The metal mercury. / (colloquial) An amalgam of mercury and tin applied to the backs of mirrors, quicksilvering.

Unpredictable, erratic or fickle; mercurial.

To overlay with quicksilver. / To treat with quicksilver.

(transitive) / (intransitive) / (transitive) / (intransitive) To become quicker or faster.

(transitive, rare) To apply quicksilver (mercury) to (something); to combine (something) with quicksilver; to quicksilver.

(chiefly Ireland, Northern England) In full quicken tree: the European rowan, rowan, or mountain ash (Sorbus aucuparia).