What is "urceolate"

Urceolate \Ur"ce*o*late\, a. [L. urceolus, dim. of urceus a pitcher or waterpot.] (Nat. Hist.) Shaped like a pitcher or urn; swelling below, and contracted at the orifice, as a calyx or corolla.

1760, with -ate (1) + Latin urceolus, diminutive of urceus "pitcher," of uncertain origin (see urn).

a. (context botany English) shaped like an urn.

adj. urn-shaped; large below and contracted toward the mouth