The Collaborative International Dictionary of English v.0.48:
Sinciput \Sin"ci*put\, n. [L., half a head; semihalf + caput the head.] 1. (Anat.) The fore part of the head. [1913 Webster] 2. (Zool.) The part of the head of a bird between the base of the bill and the vertex. [1913 Webster]WordNet (r) 3.0 (2006):
sinciput n 1: the front part of the head or skull (including the forehead)