Synonyms for flag

noun

1. A symbol, especially of a nation, usually on cloth

   banner, standard, pennant, pennon, streamer, colors, ensign, emblem, bunting, gonfalon, oriflamme, jack, Stars and Stripes, Old Glory, Union Jack, tricolor, Jolly Roger.

2. Iris

   blue flag, fleur-de-lis, sweet flag; see iris.

strike the flag

verb

1. To signal

   wave, hail, give a sign to; see signal.

2. To lose strength

   languish, dwindle, wane; see decrease 1, weaken 1.