lift one's head
驤 centers on the action of a horse lifting its head high, often with a sense of spirited movement or pride. The meaning is specific to this equine gesture.
驤 combines 馬 (horse) with 襄, which likely contributes the sound and may carry a sense of rising or lifting. The character specifically describes a horse raising its head.
The left side is a horse 馬, and the right side 襄 looks like a complex structure with something rising in the middle. Picture a spirited horse lifting its head high, with the right side suggesting the upward motion.
For ジョウ, imagine a jockey named Joe lifting his horse's head at the start of a race: Joe -> ジョウ, and the horse 驤 responds by raising its head.