May·weed n. Bot. (a) A composite plant (Anthemis Cotula), having a strong odor; dog's fennel.  It is a native of Europe, now common by the roadsides in the United States. (b) The feverfew.
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 Fen·nel n.  Bot. A perennial plant of the genus Fæniculum (Fæniculum vulgare), having very finely divided leaves.  It is cultivated in gardens for the agreeable aromatic flavor of its seeds.
    Smell of sweetest fennel.   --Milton.
    A sprig of fennel was in fact the theological smelling bottle of the tender sex.   --S. G. Goodrich.
 Azorean fennel, or Sweet fennel, (Fæniculum dulce).  It is a smaller and stouter plant than the common fennel, and is used as a pot herb.
 Dog's fennel (Anthemis Cotula), a foul-smelling European weed; -- called also mayweed.
 Fennel flower Bot., an herb (Nigella) of the Buttercup family, having leaves finely divided, like those of the fennel. Nigella Damascena is common in gardens.  Nigella sativa furnishes the fennel seed, used as a condiment, etc., in India.  These seeds are the “fitches” mentioned in Isaiah (xxviii. 25).
 Fennel water Med., the distilled water of fennel seed.  It is stimulant and carminative.
 Giant fennel (Ferula communis), has stems full of pith, which, it is said, were used to carry fire, first, by Prometheus.
 Hog's fennel, a European plant (Peucedanum officinale) looking something like fennel.
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 Anthemis cotula
      n : widespread rank-smelling weed having white-rayed flower
          heads with yellow discs [syn: mayweed, dog fennel, stinking
          mayweed, stinking chamomile]