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An annual plant (Matricaria discoidea) in the composite family, having small greenish-yellow discoid flower heads and an odor of pineapple when crushed, and widely distributed as a weed.
(Plants) an Asian plant, Matricaria matricarioides, naturalized in Europe and North America, having greenish-yellow flower heads, and smelling of pineapple when crushed: family Asteraceae (composites)
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|Noun||1.||pineapple weed - annual aromatic weed of Pacific coastal areas (United States and northeastern Asia) having bristle-pointed leaves and rayless yellow flowers|
U.S.A., United States, United States of America, US, USA, America, the States, U.S. - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
genus Matricaria, Matricaria - chiefly Old World strong-smelling weedy herbs; comprises plants sometimes included in other genera: e.g. Tanacetum; Tripleurospermum