罅 is a Chinese hanzi, listed here under the keyword “crack”. It is built from 缶 (earthen crock or jar) and 虖 (to cry). It appears as a component in 1 other character in this index.
On KumiJi Glyph Explorer, open the parts search and type “earthen crock or jar” + “to cry”. 罅 is among the results, together with every other character containing the same shapes.
Open 罅 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.