a town or city with a harbour where ships may take on and discharge cargo and passengers= harbour1= port of entry [Old English via Old French from Latin portus harbour]
the left side of a ship or aircraft looking forward: compare starboard1port adj[orig the side turned towards the harbour wall when moored]
a fortified sweet wine of rich taste and aroma made in Portugal [named after Oporto, seaport in Portugal from where the wine was orig shipped]
an opening, e.g. in machinery, allowing liquid or gas to enter or escapea socket or circuit by which a computer communicates with a printer, disk drive, etcan opening in a ship's side for loading and unloading cargo= porthole (1)a hole in an armoured vehicle or fortification through which guns may be firedchiefly Scot a gate or gateway, e.g. of a walled town or fortress [Middle English porte via French from Latin porta passage, gate]
to carry (a military weapon) diagonally in front of the body with a muzzle pointing upwards to the left port armsin computing, to transfer (software) from one type of system to another [Middle English via French from Latin portare to carry]