The nasal<unk>  is the name given to the upper, bony part of the<unk> , overlying the nasal bones.  A lower or higher than average nasal<unk>  can be a sign of various genetic disorders.
Low nose bridge
Hemifacial microsomia
Macrocephaly
Low-set ears
Flattened nasal bridge
Acephaly 
Mandibular prominence
Elfin facies