flourish
noun
a showy gesture
“she entered with a great flourish”
an ornamental embellishment in writing
a display of ornamental speech or language
the act of waving
Synonymsbrandish(music) a short lively tune played on brass instruments
“he entered to a flourish of trumpets”
“her arrival was greeted with a rousing fanfare”
verb
grow vigorously
“The deer population in this town is thriving”
“business is booming”
make steady progress; be at the high point in one's career or reach a high point in historical significance or importance
“The new student is thriving”
move or swing back and forth
“She waved her gun”
Source: WordNet 3.1, Princeton University