D defs.my
Entry 1 sense Webster, 1913

Ageratum

/(ȧ*jĕr"ȧ*tŭm [or] ăj`ẽr*ā"tŭm)/ · A·ger·a·tum · IPA /ədʒˈɛrətəm/
01 prop. n. A genus of plants, one species of which (Ageratum Mexicanum) has lavender-blue flowers in dense clusters.
  1. 1.
    A genus of plants, one species of which (Ageratum Mexicanum) has lavender-blue flowers in dense clusters.(Bot.)