Proto-Baltic: *knū- vb. intr., *knū-d- vb. intr., *knud-ē̂- vb.
Meaning: scratch, scrape, etc.
Lithuanian: kniaũsti-s (-sia/-čia) 'herumwühlen, herumstöbern, sich vergraben'
Lettish: knaûsîtiês2 (-uos, -ĩjuos) 'knibbern, knabbern', knūst (-du/-stu, -du) 'jucken', knaũsis, knusis 'Stechmücke (Culex pipiens)', knūt (U.) `jucken'