light bob

light bob (plural light bobs)

1. (informal) A soldier of the light infantry.
   • 1847 January – 1848 July, William Makepeace Thackeray, Vanity Fair […], London: Bradbury and Evans […], published 1848, →OCLC:

     Mr. Stubble, as may be supposed from his size and slenderness, was of the Light Bobs. Ensign Spooney, on the contrary, was a tall youth, and belonged to (Captain Dobbin's) the Grenadier Company […]

• John Camden Hotten (1873) The Slang Dictionary