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English definition of “flag”

flag

noun [C] uk   /flæɡ/ us  

flag noun [C] (SYMBOL)

B1 a piece of cloth, usually rectangular and attached to a pole at one edge, that has a pattern that shows it represents a country or a group, or has a particular meaning: Flags of all the participating countries are flying outside the stadium. Flags were flapping/fluttering in the breeze. The guard waved his flag and the train pulled away from the station.

flag noun [C] (STONE)

a flagstone

flag noun [C] (PLANT)

a flower that is a type of large iris

flag

verb uk   /flæɡ/ (-gg-) us  

flag verb (MARK)

[T] to put a mark on something so it can be found easily among other similar things: Flag any files that might be useful later. [T] specialized computing to mark computer information with one of two possible values so that you can deal with it later: We'll flag the records of interest in the database and then we can give you a print-out.

flag verb (BECOME TIRED)

[I] to become tired, weaker, or less effective: I was starting to flag after the ninth mile. The conversation was flagging.
Phrasal verbs
(Definition of flag from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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