- (n.) A stroke, as on a door for admittance; a rap.
- (n.) A blow; a stroke with something hard or heavy; a jar.
- (v.i.) To strike or beat with something hard or heavy; to rap; as, to knock with a club; to knock on the door.
- (v.t.) To strike for admittance; to rap upon, as a door.
- (v.i.) To drive or be driven against something; to strike against something; to clash; as, one heavy body knocks against another.
- (v.t.) To strike with something hard or heavy; to move by striking; to drive (a thing) against something; as, to knock a ball with a bat; to knock the head against a post; to knock a lamp off the table.
- (v.i.) To practice evil speaking or fault-finding; to criticize habitually or captiously.
- (v.t.) To impress strongly or forcibly; to astonish; to move to admiration or applause.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). knock. Retrieved September 22, 2026, from http://smartdefine.org/knock/definitions/2025747 |
| Chicago | Webster's. 2011. "knock" http://smartdefine.org/knock/definitions/2025747 (accessed September 22, 2026). |
| Harvard | Webster's 2011, knock, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/knock/definitions/2025747>. |
| MLA | Webster's. "knock" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/knock/definitions/2025747> |