(plural first ports of call)
- (nautical) The first port that a vessel calls in at after the start of a voyage
- After leaving from Southampton, our first port of call will be Gibraltar.
- (idiomatic) The first place to go to start a process.
- When you move to a new country, your first port of call is often the local police.
- To find the meaning of a word, your first port of call should be a decent dictionary.