This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
馰 combines 馬 (horse) with 勺, but the exact historical development and original meaning are uncertain.
A horse 馬 beside a ladle-like shape 勺. Without a clear meaning, picture a horse carrying a ladle, but the purpose is a mystery.
For テキ, imagine a horse wearing a tech gadget: tech -> テキ, though the horse's role remains unclear.