to enter, go into, get into a place or a thing / to join a group or organization / to be contained (in), to be included (in) / to be a member of a group, set, category

油, 膏: oil / 脂: fat / 脂: skin oil

虻, 蝱: a horsefly

油絵: oil painting

花虻: hoverfly

scorch, broil, toast

pig's back fat

(polite) first-person singular pronoun: I, me

a personal or private matter / (by extension) selfishness

a personal or private matter / selfishness / privacy, secrecy / (women's speech, obsolete) a brother-in-law