Whorl, n.

(hwŭrl, or hwôrl) (Synop., § 130), n. [Allied to whirl, Ger. wirtel, Lat. verticillus, verticalus, vertere. See WHIRL, 4.]

1. (Bot.) An arrangement of a number of leaves, flowers, or other organs, around a stem, in the same plane with each other.
2. (Conch.) A volution or turn of the spire of a univalve.