Definify.com

Webster 1913 Edition

Adj.

Of or pertaining to bulb; especially, in medicine, pertaining to the bulb of the spinal cord, or medulla oblongata;

as,

bulbar

paralysis

bulbar ‎(not comparable)

Relating to, or having the form of a bulb; but especially of the medulla oblongata
- 2009, January 27, “Barron H. Lerner”, in A Life Changed but Not Destroyed by Polio:
  When she began to have trouble breathing, a sign of severe bulbar polio, she was taken by ambulance to another hospital.