This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 𢈘 is uncertain. It visually contains the 广 radical and other strokes, but its origin and original meaning are unclear.
The shape suggests a roof 广 over a simple structure, but no clear meaning emerges. Remember it as an uncommon kanji with an uncertain meaning.
For ロク, imagine a lock on an old shed with a roof like 广: lock -> ロク, securing the mysterious kanji inside.