Pedal Vehicle With One Seat, One Wheel
This page is the CodyCross answer for the clue below from The 1950s, Group 1810, Puzzle 3 (First British Motorway).
Question is: Pedal Vehicle With One Seat, One Wheel
and the answer is: UNICYCLE
Word Meaning:
UNICYCLE — (cycling) A pedal cycle that only has one wheel.
Definitions from Wiktionary.