夢 is a traditional Chinese hanzi, listed here under the keyword “dream”. It is built from 冖 (cover) and 夕 (evening). It appears as a component in 4 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “cover” + “evening”. 夢 is among the results, together with every other character containing the same shapes.
Open 夢 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.