holly (n.)

evergreen shrub especially used for decoration at Christmas, mid-15c., earlier holin (mid-12c.), shortening of Old English holegn, holen "holly," from Proto-Germanic *hulin- (source also of Old Saxon, Old High German hulis, Old Norse hulfr, Middle Dutch huls, Dutch, German hulst "holly"), cognate with Middle Irish cuilenn, Welsh celyn, Gaelic cuilionn "holly," probably all from PIE root *kel- (5) "to prick" (source also of Old Church Slavonic kolja "to prick," Russian kolos "ear of corn"), in reference to its leaves. French houx "holly" is from Frankish *huls or some other Germanic source.