firth — English Dictionary

Noun

1. An arm or inlet of the sea; a river estuary.

   Broader terms

   lochsea loch

   Examples

   More examples (2)

   The descent continues, still more steeply to Dundee (Tay Bridge), and approaching from the bridge itself this sharp descent gives the curious appearance that the station is below the level of the firth.

   They drove on, every rise in the road lifting their sightline clear of the drystone dykes along the roadside, gifting glimpses of the firth and the islands, the blue peaks of Arran.

Noun

1. a long narrow estuary (especially in Scotland)

   Broader terms

   estuary