From The Collaborative International Dictionary of English v.0.48:
Garter \Gar"ter\, v. t. [imp. & p. p. Gartered; p. pr. & vb.
1. To bind with a garter.
He . . . could not see to garter his hose. --Shak.
2. To invest with the Order of the Garter. --T. Warton.