I actually hit this when I was searching for 「こいて」. It’s defined in Wiktionary as “emit” (actually it has no entry with the kanji yet). It’s actually defined in the JMDict but I’ll explain it anyway. Here’s the definition from goo.ne.jp. As you might have guessed, this term is usually written in kana.
This term is a transitive verb, with a godan conjugation.
- Emit something from the body, e.g. a fart.
- To quote someone, or retell something, e.g. a lie.
- To do. This makes it a synonym of the verb する.