- A pitcher-shaped, or flask-shaped, organ or appendage of
a plant, as the leaves of the pitcher plant, or the little bladderlike
traps of the bladderwort (Utricularia). - A genus of simple ascidians, which formerly included most
of the known species. It is sometimes used as a name for the
Ascidioidea, or for all the Tunicata.
Definition
[ n.]