knag /ˈnæɡ/noun 7verb 1forms 3 noun7 •A short spur or stiff projection from the trunk or branch of a tree, such as the stunted dead branch of a fir •A knot in a piece of wood or the base of a branch •A peg or hook for hanging something on •A pointed rock or crag •(Scotland) A small cask or barrel; a keg or noggin •(no longer used) One of the points of a stag's horn or a tine •(Scotland, no longer used) The woodpecker verb1 •To hang something on a peg formsknagged · knagging · knags