1. to enter; to go into
2. to join; to become a member of
3. (bound form) to conform to (as in 入時 rùshí)
4. abbr. for 入聲 rùshēng
5. (on product packaging, after {number n} + {classifier}) containing (n pieces) (from Japanese 入 "iri")

1. squadron
2. team
3. group

classifier: 個

1. (obsolete) alternative form of 墜 /坠 (zhuì, “to fall; to be ruined; to fall apart”)
2. alternative form of 墜 /坠 (zhuì, “to fall; to be ruined; to fall apart”)