1. a fortification 37 miles long across the narrowest part of southern Scotland (between the Firth of Forth and the Firth of Clyde); built in 140 to mark the frontier of the Roman province of Britain;
WordNet (r) 3.0 (2006):
Antonine Wall
n 1: a fortification 37 miles long across the narrowest part of
southern Scotland (between the Firth of Forth and the Firth
of Clyde); built in 140 to mark the frontier of the Roman
province of Britain