brandish, wave, wag, swing, shake
揮 centers on moving something back and forth or side to side with energy: brandishing, waving, wagging, swinging, or shaking. All meanings share the idea of a vigorous, often repeated motion.
揮 combines 扌 (hand) with 軍, which likely contributes the sound and the idea of a commanding, sweeping motion. The hand radical emphasizes the physical action of waving or brandishing.
A hand 扌 beside a military 軍 unit: imagine a commander energetically waving a flag or brandishing a sword to direct troops.
For キ, picture a key being waved in the air to signal someone: key -> キ, and the hand swings it back and forth.
command; direction; supervision
show (of power, ability, etc.); exhibition; demonstration; display; manifestation
volatilization; volatilisation
writing (esp. commissioned calligraphy); drawing; painting
(conductor's) baton; stick
non-volatility
nonvolatile memory
nonvolatile memory
fixation
nonvolatile storage
nonvolatile component; nonvolatile constituent
regular (permanent) conductor
to take command; to give direction
chain of command
commander; commanding officer; CO
command post
command post exercise
(exercising) the right to command
chain of command
(musical) conductor