A light bulb (not necessarily bulbous in shape).
Any solid object rounded at one end and tapering on the other, possibly attached to a larger object at the tapered end.
A bulbous protuberance at the forefoot of certain vessels to reduce turbulence.
The bulb-shaped root portion of a plant such as a tulip, from which the rest of the plant may be regrown.
To take the shape of a bulb; to swell.
The pole that holds up a light so it can illuminate a wide area, such as holds up a streetlight.
A tall, thin person.