Of the stems of vegetables, and their joints; also of thread: Full of knots or knobs, knotty. Obsolete exc. dialect.

Of yarn or thread: spun too thinly or unevenly; full of defects or irregularities. Frequently in figurative contexts. Cf. twitter, n.2 1 twitter, v.2

Textiles. Of cotton or wool fibres: of uneven thickness.

? Full of knots or irregularities.

Of yarn or thread: full of or containing defects or entanglements. Cf. twit, n.3