1) Bone 
the forehead
• (n.) The part of the head of a bird between the base of the bill and the vertex. • (n.) The fore part of the head.
(sin´sĭ-pәt) the upper and front part of the head. adj., sincip´ital., adj.
Sin'ci·put noun [ Latin , half a head; semi half + caput the head.] 1. (Anat.) The fore part of the head. 2. (Zoology) The part of the head of a bird between the base of the bill and the vertex. 
Type: Term Pronunciation: sin′si-put, sin-sip′i-tă Synonyms: forehead
[n] - the front part of the head or skull (including the forehead)
noun the front part of the head or skull (including the forehead)
the front part of the head or skull (including the forehead)[Difficult words] the front part of the head or skull (including the forehead)