1. An opening, road, or track, available for passing; especially, one through or over some dangerous or otherwise impracticable barrier; a passageway; a defile; a ford; as, a mountain pass. 'Try not the pass! the old man said. (Longfellow)
6. Permission or license to pass, or to go and come; a psssport; a ticket permitting free transit or admission; as, a railroad or theater pass; a military pass. A ship sailing under the flag and pass of an enemy. (Kent)
9. [Cf. Passus] A part; a division. Pass boat, a wooden or metallic box, used to carry cartridges from the service magazine to the piece. Pass check, a ticket of admission to a place of entertainment, or of readmission for one who goes away in expectation of returning.
Origin: Cf. F. Pas (for sense 1), and passe, fr. Passer to pass. See Pass.