Pronunciation: (klō'vur),[key] —n., —pl.-vers,(esp. collectively)-ver. 1. any of various plants of the genus Trifolium, of the legume family, having trifoliolate leaves and dense flower heads, many species of which, as T. pratense, are cultivated as forage plants.
2. any of various plants of allied genera, as melilot.
3. in clover, enjoying luxury or comfort; wealthy or well-off: They struggled to make their fortune, and now they're in clover.