Emily Dickinson Lexicon

wagon (-s, waggons), n. [ME < OE wægn, wain.] (webplay: carrying, conveyance, horse, kind, practice, transported, vehicle, wheels).

1. Vehicle; means of transportation; (see Numbers 7:3).
2. Chariot; means of traveling to heaven.
3. Phrase. “Seraph's wagon”: divine power to move; heavenly means of locomotion; [kenning] wings.