keep something warm for someone

keep (one's) (something) warm

To occupy a position for or take over the responsibility of someone else while they are absent. Usually used in the form "keep (one's) seat warm," and often followed by "for (one)." I'm don't usually work in reception; I'm just keep Mary's seat warm while she's on sick leave. Bob asked me to keep his place warm while he's on vacation, so, if you have any questions, you can direct them to me.
See also: keep, warm

keep something warm for someone

hold or occupy a place or post until another person is ready to do so.
See also: keep, someone, something, warm
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