門下

1. Origins, structure, and basic meaning

• Structure: Written 門下 and read もんか, it denotes study under a particular master and the body of disciples belonging to that lineage.
• Basic usage: It appears when a painter trains under a renowned teacher and when disciples preserve the technique after the master's death.

2. Common pitfalls and similar expressions

• Lineage rather than physical place
  • The expression marks affiliation with a teacher's instruction, not literally being beneath a gate.