This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
絇 combines 糸 (thread) with 句, which likely contributes a phonetic element. The exact historical development is uncertain.
The left side is thread 糸, and the right side 句 suggests a hook or phrase. Picture a decorative thread hook used as a shoe ornament.
For ク, imagine a cool decorative thread hook on a shoe: cool -> ク, and the thread 糸 makes it a fancy ornament.