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WordBand 5.5–6.5Core (NGSL)
knock
/nɒk/
verb1 of 2
to hit something to get people's attention
- “Fortune knocks at every man's door once in a life.”Tatoeba
- “When there is no bell I knock on the door.”Tatoeba
Sentences from Tatoeba show real usage. A word can have several meanings, so a sentence may use another one.
noun2 of 2
Sudden fatigue as a result of glycogen depletion from not having taken in enough nutrition.
Source: New General Service List (Browne, Culligan & Phillips) (CC BY-SA 4.0); Wiktionary (CC BY-SA 3.0); Tatoeba (CC BY 2.0 FR)