Значение идиомы knock oneself out

[knock oneself out] {v. phr.}, {informal} To work very hard; make agreat effort.

Mrs. Ross knocked herself out planning her daughter’swedding.

Tom knocked himself out to give his guests a good time.

Compare: BREAK ONE’S NECK, FALL OVER BACKWARDS, OUT OF ONE’S WAY.


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Значение идиомы knock oneself out