胥 is a Japanese kanji, listed here under the keyword “mutual”. It is built from 疋 (critters) and 月 (month). It appears as a component in 1 other character in this index.
On KumiJi Glyph Explorer, open the parts search and type “critters” + “month”. 胥 is among the results, together with every other character containing the same shapes.
Open 胥 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.