| 单词 | negro yam | 
| 释义 | > as lemmasNegro yam   Negro yam  n. the white Guinea yam,  Dioscorea rotundata, cultivated in West Africa and the West Indies; the tuber of this plant. ΚΠ 1756    P. Browne Civil & Nat. Hist. Jamaica  ii. ii. 359  				The Negro Yam... The Yam. Both these plants are cultivated for food, the roots, which grow very large, being mealy and easy of digestion. 1814    J. Lunan Hortus Jamaicensis II. 308  				This [sc. Dioscorea sativa] is commonly called negro yam. 1953    Caribbean Q. 2  iv. 32  				Dioscorea sativa the so-called negro-yam, may have been indigenous, for it..sometimes grows wild; but more probably the wild specimens were originally escapes from cultivation. 1971    Jamaican Weekly Gleaner 3 Nov. 34/3 		(advt.)	  				Negro yams, yellow yams, sweet potatoes. < as lemmas  | 
	
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