Entry 2 senses Webster, 1913 Sinciput /sĭnʹsĭpŭt/ · Sin·ci·put · IPA /ˈsɪnsɪpʌt/ 01 n. The fore part of the head. 1. The fore part of the head.(Anat.) 2. The part of the head of a bird between the base of the bill and the vertex.(Zool.)