A flag waver is someone who waves a flag, typically in a show of patriotism or celebration. The crossword solutions for the term 'flag waver' are WIND (4 letters), PATRIOT (7 letters), and GALE (4 letters). WIND is an atmospheric current that can be used to move a flag, while a PATRIOT is someone who loves their country and is likely to wave a flag in celebration. A GALE is a strong WIND, which could also be used to wave a flag.