Entry 2 senses · 2 variants Webster, 1913 Shittle · Shit·tle · IPA /ˈʃɪtl̩/ n. a. 01 n. A shuttle. 1. A shuttle.[Obs.] 02 a. Wavering; unsettled; inconstant. 1. Wavering; unsettled; inconstant.[Obs.]