Emily Dickinson Lexicon

a jar, adv. [see jar, n. and jar, v.]

Open; available for pollen exchange; [fig.] cylindrical in form; like a container of honey; shaped like a round vessel with handles; [word play on verb] buzzing; vibrating; jerking; making a strident insect sound; rumbling like cars on train tracks; moving up and down like a drill bit; [prothesis; see ajar, adv.] ajar; a'jar.