To become quick or alive; receive life.To become quick or lively; become more active or sensitive.To enter that state of pregnancy in which the child gives indications of life; begin to manifest signs of life in the womb: said of the mother or the child. The motion of the fetus is first felt by the mother usually about the eighteenth week of pregnancy.To make quick or alive; vivify; revive or resuscitate, as from death or an inanimate state.To revive; cheer; reinvigorate; refresh.To make quick or speedy; hasten; accelerate: as, to quicken motion, speed, or flight.To sharpen; give keener perception to; stimulate; incite: as, to quicken the appetite or taste; to quicken desires.To work with yeast.Synonyms To expedite, hurry, speed.To excite, animate.n. The couch- or quitch-grass, Agropyrum (Triticum) repens. Also quickens.n. Same as quick-beam.In naval architecture, to give a greater curve to.