| 单词 | hardhaw | 
| 释义 | † hardhawn. Obsolete. rare.   Black knapweed,  Centaurea nigra. Cf. hardhake n., hardhead n.2 5. ΘΚΠ the world > plants > particular plants > plants perceived as weeds or harmful plants > weed > 			[noun]		 > knapweed ironhardOE matfellon?a1300 hardhawa1400 bull-weeda1450 club-weeda1500 knapweed1530 crop-weed1597 hardhead1610 horse-knop1691 horse-knob1724 buttonweed1760 knobweed1785 ironweed1808 knotweed1827 ironhead1863 a1400    Alphita 		(Selden)	 		(1887)	 83  				Iacea nigra,..bulwed uel hardhaw. This entry has been updated (OED Third Edition, June 2015; most recently modified version published online March 2019). <  | 
	
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