All 4 Uses

flourish
in
Sweet Far Thing
(Auto-generated)

I bow with an excessive flourish and wait for Tom to return the jab.†
Chpt 1
Mrs. Nightwing strides between the neat rows of our desks, scrutinizing our form, criticizing the loops and the flourishes she feels fall short of the mark.†
Chpt 2
With a flourish she opens the basket and the smell of Brigid's heavenly apple cake drifts from its depths.†
Chpt 3 *
The Order brought the tribes together, and for a time, the tribes flourished, the gardens blossomed; in your world men were influenced, history was made.†
Chpt 3

Definitions:

(1) (flourish as in: the business is flourishing)
to thrive (grow or develop well)
(2) (flourish as in: dismissed them with a flourish)
a showy gesture

or:

the act of waving -- a hand or an item
(3) (meaning too rare to warrant focus)
In Shakespeare's plays, flourish is often used as a stage direction indicating a specific type of showy gesture: fanfare played by trumpets or other horns to announce the entry or exit of royalty.

Check a comprehensive dictionary for other senses including some that are of interest to musicians.