[rest-har-oh] 
| a low, pink-flowered European shrub, Ononis spinosa, of the legume family, having tough roots that hinder the plow or harrow. |
| rest·har·row (rěst'hār'ō) n. Any of several Old World plants of the genus Ononis, having woody stems, axillary pink or purplish flowers, and trifoliate leaves with dentate leaflets. [Obsolete rest, to check (short for Middle English aresten; see arrest) + harrow1.] |
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