This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 鬳 is uncertain. It visually combines 虍 (tiger head) and 鬲 (a cauldron or tripod vessel), but the original meaning and component relationship are unclear.
Since the meaning is uncertain, focus on the shape: a tiger head 虍 sitting on top of a tripod vessel 鬲. Imagine a tiger guarding an ancient cooking pot.
For ケン, picture a tiger named Ken guarding the tripod vessel: Ken -> ケン, and the tiger head 虍 sits above the pot 鬲.