This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
礭 combines 石 (stone) with 霍, but the exact historical development and original meaning are uncertain.
The left side is stone 石, and the right side 霍 contains rain 雨 over a bird-like shape. Picture a stone that somehow relates to rain and birds, but its meaning remains unclear.
For カク, imagine a stone that makes a sharp 'kaku' sound when struck: kaku -> カク.