Obs. [Derivation uncertain: perh. ad. OF. *tourel (not recorded, but cf. touret ‘instrument servant à percer,’ 15th c. in Godef.), or obs. F. tarelle, terelle auger (Cotgr.), surviving in Picard térelle.] A cooper’s auger.
1611. Cotgr., Barroir, a Turrell; th’ Oager wherewith Coopers make holes for the barre-pinnes of a peece of caske. Ibid., Tirefond de tonnelier, a Coopers Turrell; the Auger wherewith he boreth holes. Ibid., Ville … the long oagar tearmed by our Coopers, a Turrell. [Hence in Sherwood, Littleton, Kersey, Bailey, etc.]
