ichidan verb
give a signed statement; give an IOU
Idiomatic expression meaning to provide a written pledge or promissory note, often in a formal or legal context. The phrase literally means 'to put in a single document'.
借金の証拠として、彼は一札入れた。
He gave a signed statement as proof of the debt.
契約の際には、必
I always make sure to get a signed document when making a contract.