in Architecture, a kind of gallery formed on the ground; or a piazza encompassed with arches supported by columns, where people walk under covert. The roof is usually vaulted, but sometimes flat. The ancients called it lacunar. Though the word portico, be derived from porta, a gate or door, yet it is applied to any disposition of columns which form a gallery, without any immediate relation to doors or gates.

PORT-JACKSON, a bay and English settlement on the east coast of New Holland. The two heads through which the entrance lies are distant from each other one mile and three quarters; and the heads on each side are high, steep,