Origin: before 900;Middle Englishcnol,Old Englishcnoll; cognate with Norwegianknoll hillock; akin to Dutchknol turnip, Icelandicknollur,GermanKnollen,Danishknold tuber
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.