- the letter Y, or something having a similar shape.
- a three-phase, Y-shaped circuit arrangement.
- a track arrangement with three switches and three legs for reversing the direction of a train.
- a river flowing from central Wales through SW England into the Severn estuary. 130 miles (210 km) long.
- a river in E Wales and W England, rising in Powys and flowing southeast into Herefordshire, then south to the Severn estuary. Length: 210 km (130 miles)
