Asterion

[æs'tiәriɔn]

(noun.) the craniometric point at the junction of the lamboid suture and the occipitomastoid suture and the parietomastoid suture.

Checker: Sheena--From WordNet

(n.) The point on the side of the skull where the lambdoid, parieto-mastoid and occipito-mastoid sutures.

Checker: Tessie