From WordNet (r) 3.0 (2006):
flag
n 1: emblem usually consisting of a rectangular piece of cloth
of distinctive design
2: 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. [syn:
masthead, flag]
3: plants with sword-shaped leaves and erect stalks bearing
bright-colored flowers composed of three petals and three
drooping sepals [syn: iris, flag, fleur-de-lis, sword
lily]
4: a rectangular piece of fabric used as a signalling device
[syn: flag, signal flag]
5: flagpole used to mark the position of the hole on a golf
green [syn: pin, flag]
6: stratified stone that splits into pieces suitable as paving
stones [syn: flag, flagstone]
7: a conspicuously marked or shaped tail
v 1: communicate or signal with a flag
2: provide with a flag; "Flag this file so that I can recognize
it immediately"
3: droop, sink, or settle from or as if from pressure or loss of
tautness [syn: sag, droop, swag, flag]
4: decorate with flags; "the building was flagged for the
holiday"
5: become less intense [syn: ease up, ease off, slacken
off, flag]