KNOCK

noun

1. Sudden fatigue as a result of glycogen depletion from not having taken in enough nutrition.

noun

1. An abrupt rapping sound, as from an impact of a hard object against wood.
2. A sharp impact.
3. Criticism.

verb

1. To strike for admittance; to rap upon, as a door.
2. To criticize verbally; to denigrate; to undervalue.
3. To kick a ball towards another player; to pass.