vi to speak affectedly.
2. knack ·noun a petty contrivance; a toy; a plaything; a knickknack.
3. knack ·vi to crack; to make a sharp, abrupt noise to chink.
4. knack ·noun a readiness in performance; aptness at doing something; skill; facility; dexterity.
5. knack ·noun something performed, or to be done, requiring aptness and dexterity; a trick; a device.