a town or city with a harbour or access to navigable water where ships load or unload:the French port of Toulon [in place names]:Port Elizabeth
a harbour: [as modifier]:Belfast’s port facilities
any port in a storm
proverb in adverse circumstances one welcomes any source of relief or escape:Dora’s eye fell on him—any port in a storm
port of call
a place where a ship stops on a voyage.
a point, typically one of a series, at which one stops briefly or to which one has recourse during a journey or procedure:his last port of call that day was the bank
port of entry
a harbour or airport where customs officers are stationed to oversee people and goods entering or leaving a country.