Jerry; Gerry
nickname
1
a German; the Germans. Derogatory, often as an abstract reference to Germans as the enemy whether at war or football. Possibly derived from 'Jerry' (a chamber pot) in reference to the shape of German military helmets; more likely, as 'Gerry', an elaborated abbreviation of 'German' US, 1915.
2
a foreman on a railway track crew US, 1867