simple past tense and past participle of quicken

(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).

(chiefly Midlands (northern), Northern England, Northern Ireland, Scotland) Synonym of couch grass (“a species of grass, Elymus repens”); also (chiefly in the plural), the underground rhizomes of this, and sometimes other grasses.

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

present participle of quicken

An increase of speed. / The action of bringing someone or something to life. / The first noticeable movements of a foetus during pregnancy, or the period when this occurs.

Third-person singular simple present indicative form of quicken

(chiefly Midlands (northern), Northern England, Northern Ireland, Scotland) Synonym of couch grass (“a species of grass, Elymus repens”); also, the underground rhizomes of this, and sometimes other grasses.

(chiefly Midlands (northern), Northern England, Northern Ireland, Scotland) plural of quicken