The difference between Grass and Knock out
When used as verbs, grass means to lay out on the grass, whereas knock out means to strike or bump (someone or something) out.
Grass is also noun with the meaning: any plant of the family poaceae, characterized by leaves that arise from nodes in the stem and leaf bases that wrap around the stem, especially those grown as ground cover rather than for grain.
check bellow for the other definitions of Grass and Knock out
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Grass as a noun (countable, uncountable):
Any plant of the family Poaceae, characterized by leaves that arise from nodes in the stem and leaf bases that wrap around the stem, especially those grown as ground cover rather than for grain.
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Grass as a noun (countable):
Various plants not in family Poaceae that resemble grasses.
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Grass as a noun (uncountable):
A lawn.
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Grass as a noun (uncountable, slang):
Marijuana.
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Grass as a noun (countable, Britain, slang):
An informer, police informer; one who betrays a group (of criminals, etc) to the authorities.
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Grass as a noun (uncountable, physics):
Sharp, closely spaced discontinuities in the trace of a cathode-ray tube, produced by random interference.
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Grass as a noun (uncountable, slang):
Noise on an A-scope or similar type of radar display.
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Grass as a noun:
The season of fresh grass; spring.
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Grass as a noun (obsolete, figurative):
That which is transitory.
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Grass as a noun (countable, folk etymology):
Asparagus.
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Grass as a verb (transitive):
To lay out on the grass; to knock down (an opponent etc.).
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Grass as a verb (transitive, or, intransitive, slang):
To act as a grass or informer, to betray; to report on (criminals etc) to the authorities.
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Grass as a verb (transitive):
To cover with grass or with turf.
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Grass as a verb (transitive):
To expose, as flax, on the grass for bleaching, etc.
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Grass as a verb (transitive):
To bring to the grass or ground; to land.
Examples:
"to grass a fish"
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Knock out as a verb (transitive):
To strike or bump (someone or something) out.
Examples:
"I accidentally knocked out the glass in my picture frame."
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Knock out as a verb (transitive, idiomatic):
To render unconscious, as by a blow to the head.
Examples:
"The boxer knocked out his opponent in the third round."
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Knock out as a verb (transitive, idiomatic):
To put to sleep.
Examples:
"The allergy pill knocked him out for a good three hours."
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Knock out as a verb (transitive, idiomatic):
To exhaust.
Examples:
"Running errands all day really knocked him out."
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Knock out as a verb (transitive, idiomatic):
To complete, especially in haste; knock off.
Examples:
"They knocked out the entire project in one night."
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Knock out as a verb (transitive, idiomatic):
To cause a mechanism to become non-functional by damaging or destroying it.
Examples:
"The antitank gun knocked out the enemy tank."
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Knock out as a verb (sports):
To eliminate.
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Knock out as a verb (transitive):
To communicate (a message) by knocking.
Examples:
"The prisoner knocked out a message on the wall for the prisoner in the adjoining cell."
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Knock out as a verb:
To lose the scent of hounds in fox-hunting.