Entry 1 sense Webster, 1913 Wag-halter · Wag·-hal·ter · IPA 01 n. One who moves or wears a halter; one likely to be hanged. 1. One who moves or wears a halter; one likely to be hanged.[Colloq. & Obs.] “I can tell you, I am a mad wag-halter.” — Marston.