Noah Webster
Thrum
THRUM, noun [Gr. a fragment; to break.] The ends of weaver's threads.
1. Any coarse yarn.
2. Thrums, among gardeners, the thread-like internal bushy parts of flowers; the stamens.
THRUM, verb intransitive To play coarsely on an instrument with the fingers.
THRUM, verb transitive To weave; to know; to twist; to fringe.
1. Among seamen, to insert short pieces of rope-yard or spun yard in a sail or mat.