1
: short in duration, extent, or length
a brief meeting
briefness
noun
1
a
: an official letter or mandate (see mandate entry 1 sense 1)
b
: a specific instruction or responsibility
his brief was to strengthen the army
2
3
: an outline of an argument
especially, law
: a formal written presentation of an argument that sets forth the main points with supporting precedents and evidence
a legal brief
filed a brief
4
briefed; briefing; briefs
1
: to make an abstract or abridgment of
brief a report
summarized northeastern Siberian archaeology and has briefed many normally unavailable sources—Wendell Oswalt
2
a
: to give final precise instructions to
were briefed before their mission
b
: to coach thoroughly in advance
c
: to give essential information to
The president is being briefed by his advisors.
3
: to discuss (something, such as a military operation) in a briefing
briefed the mission
briefer
noun
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Merriam-Webster unabridged
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