Definition of "Flag" :

noun: a conspicuously marked or shaped tail

noun: emblem usually consisting of a rectangular piece of cloth of distinctive design

noun: stratified stone that splits into pieces suitable as paving stones

noun: flagpole used to mark the position of the hole on a golf green

noun: a listing printed in all issues of a newspaper or magazine (usually on the editorial page) that gives the name of the publication and the names of the editorial staff, etc.

noun: a rectangular piece of fabric used as a signalling device

noun: plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals

verb: become less intense

verb: provide with a flag

"Flag this file so that I can recognize it immediately."

verb: communicate or signal with a flag

verb: decorate with flags

"The building was flagged for the holiday."

verb: droop, sink, or settle from or as if from pressure or loss of tautness