Definition of knack

• v. i. - To crack; to make a sharp, abrupt noise to chink.
• v. i. - To speak affectedly.
• n. - A petty contrivance; a toy; a plaything; a knickknack.
• n. - A readiness in performance; aptness at doing something; skill; facility; dexterity.
• n. - Something performed, or to be done, requiring aptness and dexterity; a trick; a device.