Definition of bulbs:
(n) :
A light bulb (not necessarily bulbous in shape).
(n) :
The bulb-shaped underground portion of a plant such as a tulip, consisting of a shortened stem and many fleshy scale leaves, from which the rest of the plant may be regrown.
(n) :
Any solid object rounded at one end and tapering on the other, possibly attached to a larger object at the tapered end.
(n) :
(nautical) A bulbous protuberance at the forefoot of certain vessels to reduce turbulence.
(v) :
(intransitive) To take the shape of a bulb; to swell.
(n) :
(dated, neuroanatomy) The medulla oblongata.