Definitions for "knock "
see detonation knock sensor Koni
Noise which results from the spontaneous ignition of a portion of the air-fuel mixture in the engine cylinder caused by overly advanced ignition timing or use of incorrectly low octane fuel for that engine.
Detonation occurring in an engine's combustion chamber due to uncontrolled burning of the last portion of the air-fuel mixture. Knock results in the development of sudden excessive pressures, reduces engine efficiency, and can destroy engine parts.
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.
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.
To practice evil speaking or fault-finding; to criticize habitually or captiously.
To criticise; to find fault with; to disparage.
to criticise it.
Keywords:  vigorous, whack, bang, bash, took
a vigorous blow; "the sudden knock floored him"; "he took a bash right in his face"; "he got a bang on the head"
the act of hitting vigorously; "he gave the table a whack"
deliver a sharp blow or push :"He knocked the glass clear across the room"
To impress strongly or forcibly; to astonish; to move to admiration or applause.
to tap the table (an improper way of passing).
make light, repeated taps on a surface; "he was tapping his fingers on the table impatiently"
In draw poker a player may knock on the table to signify that no cards are required.
"Knock", written by Fredric Brown, is a science fiction short story that starts with a description of "a sweet little horror story that is only two sentences long." It then goes on to elaborate on those two sentences and build a more complete story around them.
Keywords:  nip, see
knock is a server/client set that implements the idea known as port-knocking. Port-knocking is a method of accessing a backdoor to your firewall through a special sequence of port hits. This can be useful for opening up temporary holes in a restrictive firewall for SSH access or similar.
Keywords:  deadwood, melds, exposing, lay, adding
to end a hand by exposing one's cards, grouped into melds; a player may not knock without a hand having 10 points or less in deadwood lay off to reduce one's deadwood by adding cards to the melds of the knocker
Keywords:  gonna, i'm, collar, food, see
to obtain (see collar). Ex. "I'm gonna knock me some food".
Keywords:  bonk, hunger, edit, short, condition
Referred to as "the knock". Short for "hunger knock". See Bonk (condition)[ edit][ edit
Keywords:  colloq, pregnant, touch, slang, family
touch wood knock up [slang] put in the family way [colloq.], make pregnant
When referring to conch, to remove the mollusk from its shell
Keywords:  violence, bumped, car, tree, force
knock against with force or violence; "My car bumped into the tree"
To take without consent or permission and with no intention of returning it.
Keywords:  check