(n) annual prostrate mat-forming weed having whorled leaves and small greenish-white flowers; widespread throughout North America, Syn. Indian chickweed, Molluga verticillata
(n) submersed plant with whorled lanceolate leaves and solitary axillary flowers; Old World plant naturalized in southern United States and clogging Florida's waterways, Syn. Hydrilla verticillata
(n) tall evergreen having a symmetrical spreading crown and needles growing in whorls that resemble umbrellas at ends of twigs, Syn. Sciadopitys verticillata
{ } a. [ See Verticil. ] (Bot. & Zool.) Arranged in a transverse whorl or whorls like the rays of a wheel; as, verticillate leaves of a plant; a verticillate shell. [ 1913 Webster ]