intransitive verb.
To take the shape of a bulb; to swell.
noun.
A spheroidal body growing from a plant either above or below the ground (usually below), which is strictly a bud, consisting of a cluster of partially developed leaves, and producing, as it grows, a stem above, and roots below, as in the onion, tulip, etc. It differs from a corm in not being solid.
noun.
A name given to some parts that resemble in shape certain bulbous roots.
noun.
the eyeball.
noun.
the “root,” or part whence the hair originates.
noun.
the medulla oblongata, often called simply bulb.
noun.
the vascular and nervous papilla contained in the cavity of the tooth.
noun.
An expansion or protuberance on a stem or tube, as the bulb of a thermometer, which may be of any form, as spherical, cylindrical, curved, etc.
noun.
a light bulb.