noun

• The longest river in the British Isles, which flows through Ireland into the Atlantic Ocean.
• A town in County Clare, Ireland, at the mouth of that river, and its nearby international airport.
• A sea area, to the west of Ireland, centred on the estuary of this river.
• A small town in Horowhenua District, North Island, New Zealand.
• A surname from Irish of Irish origin, variant of Shanahan, anglicised from Ó Seanaigh (“descendant of a person named Old”).
• A unisex given name transferred from the surname or place name (from the river); first used in the USA in early 20th century, and only recently in Ireland.