BIFILAR a.
use of two threads; as, bifilar suspension; a bifilar balance. Bifilar micrometer (often called a bifilar), an instrument form measuring minute distances or angles by means of two very minute threads (usually spider lines), one of which, at least, is movable; -- more commonly called a filar micrometer.…
BINDWEED n.
(C. arvensis); the white, the blue, the Syrian, bindweed. The black bryony, or Tamus, is called black bindweed, and the Smilax aspera, rough bindweed. The fragile bindweed bells and bryony rings. Tennyson.