Nautical (adjective)

1. Relating to ships, sailing, or seamanship.
2. Relating to the sea or the study of navigation.

Origin:

Derived from the word 'nauticus' meaning relating to sailors or ships.

Examples:

1. The nautical chart showed the depths of the ocean and the locations of underwater hazards.
2. The nautical theme of the restaurant was evident in the ship-shaped bar and the ropes and anchors hanging from the ceiling.
3. The nautical flags spelled out the name of the boat, indicating that it was a friendly vessel.
4. The nautical instrument allowed the sailor to determine his position at sea using the stars and the horizon.
5. The nautical knots were used to secure the lines and keep the boat from drifting away from the dock.