Webster’s Revised Unabridged Dictionary · 1913
Basilar
Bas′i·lar, Bas′i·la·ry, a. [F. basilaire, fr. L. basis. See Base, n.] 1. Relating to, or situated at, the base.
2. Lower; inferior; applied to impulses or springs of action. [R.] "Basilar instincts." H. W. Beecher.