Green’s Dictionary of Slang

1. a blow to the ear.

1824		Annals of Sporting 1 Jan. 58: His adversary was dropping claret from a wax-melting lugger under the listener.
1825		Pierce Egan’s Life in London 3 Apr. 77/3: Bob [...] hit him a left handed lugger; and when time was called, Tom was deaf to the sound.

2. an earring.

1886

W. Newton Secrets of Tramp Life Revealed 9: Luggers ... Pair of Ear Rings.