Definitions
1.verbTo furnish or deck out with flags.
2.verbTo mark with a flag, especially to indicate the importance of something.
3.verb(often with down) To signal to, especially to stop a passing vehicle etc."Please flag down a taxi for me."
4.verbTo convey (a message) by means of flag signals."to flag an order to troops or vessels at a distance"
5.verb(often with up) To note, mark or point out for attention."I've flagged up the need for further investigation into this."
6.verbTo signal (an event)."The compiler flagged three errors."
7.verbTo set a program variable to true."Flag the debug option before running the program."
8.verbTo decoy (game) by waving a flag, handkerchief, etc. to arouse the animal's curiosity.
9.verbTo penalize for an infraction."The defender was flagged for unsportsmanlike conduct."
10.verbTo defeat (an opponent) on time, especially in a blitz game.
11.verbTo weaken, become feeble."His strength flagged toward the end of the race."
12.verbTo hang loose without stiffness; to bend down, as flexible bodies; to be loose, yielding, limp.
13.verbTo let droop; to suffer to fall, or let fall, into feebleness."to flag the wings"
14.verbTo enervate; to exhaust the vigour or elasticity of.
15.verbTo pave with flagstones."Fred is planning to flag his patio this weekend."
16.adjectiveMarked with a flag
17.adjectiveRegistered with a particular country (and thus flying its flag)