Webster’s Revised Unabridged Dictionary · 1913
Parol
Pa·rol′, n. [See Parole, the same word.]
1. A word; an oral utterance. [Obs.]
2. (Law) Oral declaration; word of mouth; also, a writing not under seal. Blackstone.
Pa·rol′, a. Given or done by word of mouth; oral; also, given by a writing not under seal; as, parol evidence.
Parol arrest (Law), an arrest in pursuance of a verbal order from a magistrate. — Parol contract (Law), any contract not of record or under seal, whether oral or written; a simple contract. Chitty. Story.