This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
勡 combines 票 and 力, but the exact historical development is uncertain. It may have originally expressed forcing or compelling, but the modern form is rare and its component relationship is not clearly established.
The left side 票 suggests a ticket or slip, and the right side 力 is power. Imagine using force to take a ticket, but the overall meaning remains unclear.
For ヒョウ, picture a ticket (票) being snatched with force (力) by a hyena: hyena -> ヒョウ, though the kanji's meaning is uncertain.