1) Basilary 2) Bottom 3) Situated at the foundation 1) Basilary 
• (n.) Alt. of Basilary
Relating to the base of a pyramidal or broad structure. ... (05 Mar 2000) ... 
(bas´ĭ-lәr) pertaining to a base or basal part.
Type: Term Pronunciation: bas′i-lăr, bas-i-lā′ris Definitions: 1. Relating to the base of a pyramidal or broad structure.
Basilar: Located at or near the base of a structure, especially the base of the skull. For example, a basilar fracture is a break in the bone at the base of the skull and can be life-threatening.
[adj] - of or relating to or located at the base
basilary adjective of or relating to or located at the base; `the basilar membrane of the cochlea`
adjective, Latin basis = base.