This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The historical origin of 傄 is uncertain. It combines the person radical 亻 with 眘, but the component relationship and original meaning are unclear.
A person 亻 beside 眘, a shape that looks like an eye 目 under a roof, but the overall meaning is obscure. Picture a person peering intently, though the kanji's meaning is uncertain.
For カツ, imagine a person 亻 cutting カツ (katsu) through the confusion of the right side 眘 to find clarity: katsu -> カツ.