1. A fortification, made in haste, of trees, earth, palisades, wagons, or anything that will obstruct the progress or attack of an enemy. It is usually an obstruction formed in streets to block an enemy's access.
2. Any bar, obstruction, or means of defense. Such a barricade as would greatly annoy, or absolutely stop, the currents of the atmosphere. (Derham)
Origin: f. Barricade, fr. Sp. Barricada, orig. A barring up with casks; fr. Barrica cask, perh. Fr. LL. Barra bar. See bar, and cf. Barrel.