Obs. rare. [a. (ult.) Arab. al-mursi, i.e., al the + mursī indicator, agent-noun f. 4th form of rasay to see.] The denticle tooth-like point or pointer situate on the Rete of the astrolabe near the head of Capricorn. Skeat.
c. 1391. Chaucer, Astrol., I. xxiii. Thin almury is cleped the denticle of capricorne or else the kalkuler.