挟まる

1. Origins, structure, and basic meaning

• Structure: 挟まる, read はさまる, uses the being-caught-between stem 挟 in an intransitive verb.
• Basic usage: It is an intransitive verb for an object becoming caught between two things, as in 写真が本の間に挟まる.

2. Common pitfalls and similar expressions

• Grammar and combinations
  • The transitive verb for placing something between is 挟む; with 挟まる, the item caught takes が.