In OE. cnéow-holen. [f. KNEE sb. (perh. in reference to its height) + holen, HOLLY (as a prickly evergreen).] A name of Butchers Broom (Ruscus aculeatus).
c. 1000. Sax. Leechd., I. 162. Wið þone dropan, ʓenim tweʓen scenceas fulle woses ðysse wyrt þe man cneowholen nemneð.
c. 1265. Voc. Names Pl., in Wr.-Wülcker, 557/33. Frisgonem, i. fresgun, i. cnehole.
1661. Lovell, Hist. Anim. & Min., 448. Asparagus, grasse, knee holly, marsh-mallows.
1785. Martyn, Rousseaus Bot., xxix. (1794), 461. Butchers Broom, or Knee Holly, bears its flowers in the middle of the leaves.
1866. Treas. Bot., 999.