In French, the English Channel is called "La Manche", meaning this part of a shirt or coat
[DOC] [TLE] AT CALAIS GATE [PAR] his art; above him we notice English coats of arms, picked out by a dra- matic, 
diagonal ... La Manche, or the English Channel, has come to ... disembark at 
Calais and touch French soil before traveling home again.