6. (superl.) Sensitive; perceptive in a high degree; ready; as, a quick ear.
7. (superl.) Pregnant; with child.
8. (adv.) In a quick manner; quickly; promptly; rapidly; with haste; speedily; without delay; as, run quick; get back quick.
9. (n.) That which is quick, or alive; a living animal or plant; especially, the hawthorn, or other plants used in making a living hedge.
10. (n.) The life; the mortal point; a vital part; a part susceptible of serious injury or keen feeling; the sensitive living flesh; the part of a finger or toe to which the nail is attached; the tender emotions; as, to cut a finger nail to the quick; to thrust a sword to the quick, to taunt one to the quick; -- used figuratively.
11. (n.) Quitch grass.
12. (v. t. & i.) To revive; to quicken; to be or become alive.