cross-bow which discharged several bolts in succession
弮 centers on a type of crossbow that could fire multiple bolts in quick succession. The meaning is specific to this weapon and does not extend to broader concepts.
弮 combines 弓 (bow) with 龹, which likely contributes a phonetic element. The character is rare and its exact historical development is uncertain.
The top 龹 looks like a bundle of bolts, and the bottom 弓 is a bow. Picture a crossbow with a magazine of bolts ready to fire in rapid succession.
For ケン, imagine Ken, a skilled archer, loading the crossbow: Ken -> ケン, and he fires several bolts at once.