Knock /(nŏk)/

Knock

v. i.

imp. & p. p. Knocked; p. pr. & vb. n. Knocking

To drive or be driven against something; to strike against something; to clash; as, one heavy body knocks against another.
To strike or beat with something hard or heavy; to rap; as, to knock with a club; to knock on the door.
For harbor at a thousand doors they knocked.
— Dryden.

Seek, and ye shall find; knock, and it shall be opened unto you.
— Matt. vii. 7.
To practice evil speaking or fault-finding; to criticize habitually or captiously. [Slang, U. S.]

To knock about: to go about, taking knocks or rough usage; to wander about; to saunter.
To knock up: to fail of strength; to become wearied or worn out, as with labor; to give out.
To knock off: to cease, as from work; to desist.
To knock under: to yield; to submit; to acknowledge one's self conquered; -- an expression probably borrowed from the practice of knocking under the table with the knuckles, when conquered.

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.
When heroes knock their knotty heads together.
— Rowe.
To strike for admittance; to rap upon, as a door.
Master, knock the door hard.
— Shak.
To impress strongly or forcibly; to astonish; to move to admiration or applause. [Slang, Eng.]
To criticise; to find fault with; to disparage.

To knock in the head: to stun or kill by a blow upon the head; hence, to put am end to; to defeat, as a scheme or project; to frustrate; to quash.
To knock off: To force off by a blow or by beating.
To knock out: to force out by a blow or by blows; as, to knock out the brains.
To knock up: To arouse by knocking.

A blow; a stroke with something hard or heavy; a jar.
A stroke, as on a door for admittance; a rap.
A loud cry or some great knock.
— Holland.