(bound form) base; foundation / (bound form) radical (chemistry) / (bound form) gay (loanword from English into Cantonese, Jyutping: gei1, followed by orthographic borrowing from Cantonese)
round / lump / ball / to roll into a ball / to gather / regiment / group / society / classifier for a lump or a soft mass: wad (of paper), ball (of wool), cloud (of smoke)