onshore /ˈɒnʃɔː/adjective 3adverb 1verb 1forms 5 adjective3 •Positioned on or near the shore.The second time La Suprema came into harbor, at the Port of Augusta, in the east of Sicily, I watched the police onshore grow impatient with a teenager who was scheduled to disembark. — 2021 •Within the country; not overseas.By this measure, it was only the second largest onshore leak in the US last year, surpassed by one near San Antonio, Texas in March which discharged 147 tonnes of methane an hour. — 2023 •Moving from the sea towards the land. adverb1 •From the sea towards the land.Like most storms, Hurricane Katrina weakened as it came onshore, and by Monday evening the National Hurricane Center had downgraded it to a tropical storm. — 2005 verb1 •To relocate production, services or jobs to lower-cost locations in the same country. formsonshored · onshoring · onshores · more onshore · most onshore