Of an austere or hard nature; rugged.
Of a part of the body, a tree, etc.: full of knots (knobs or swellings); gnarled, knobbly.
Of string or something stringlike: full of, or tied up, in knots.
Complicated or tricky; complex, difficult.
Of or pertaining to scabies.
Having scabs.
Any of various herbaceous plants of the genus Scabiosa.
Any of several plants of the genus Knautia.