shout
噭 centers on a loud vocal outburst: a shout or cry. The single given meaning is straightforward, with no major distinct senses to reconcile.
噭 combines 口 (mouth) with 敫, which likely contributes the sound and may relate to striking or emitting. The exact historical development of 敫 is uncertain.
The mouth radical 口 beside 敫 suggests a mouth producing a sharp, forceful sound. Picture a mouth opening wide to shout, with the right side evoking the burst of noise.
For キョウ, imagine a loud shout echoing through a canyon: canyon -> キョウ, and the mouth 口 amplifies the cry.