/ ˌɒfˈʃɔː(r); NAmE ˌɔːf-; ˌɑːf-/ adjective [ usually before noun ]
1.
happening or existing in the sea, not far from the land :
offshore drilling
an offshore island
2.
( of winds ) blowing from the land towards the sea :
offshore breezes
3.
( business ) ( of money, companies, etc. ) kept or located in a country that has more generous tax laws than other places :
offshore investments
► off·shore adverb :
a ship anchored offshore
profits earned offshore
—compare inshore , onshore