[kill two
birds with one stone] {v. phr.} To succeed in doing twothings by only one
action; get two results from one effort.
Motherstopped at the supermarket to
buy bread and then went to get Jane atdancing class; she killed two birds with
one stone.
The historyteacher told us that making an outline kills two birds
with one stone;it makes us study the lesson till we understand it, and it gives
usnotes to review before the test.
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