This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 挃 is uncertain. It visually combines 扌 (hand) with 至, but the original semantic and phonetic roles are unclear.
The hand radical 扌 beside 至 suggests an action involving reaching or arriving, but the exact meaning is unclear.
For チツ, imagine a hand reaching out to touch a cheetah: cheetah -> チツ, though the sound is approximate.