—n. 1. an interlacing, twining, looping, etc., of a cord, rope, or the like, drawn tight into a knob or lump, for fastening, binding, or connecting two cords together or a cord to something else.
2. a piece of ribbon or similar material tied or folded upon itself and used or worn as an ornament.
3. a group or cluster of persons or things: a knot of spectators. 4. the hard, cross-grained mass of wood at the place where a branch joins the trunk of a tree.
5. a part of this mass showing in a piece of lumber, wood panel, etc.
6. Anat.,Zool.a protuberance or swelling on or in a part or process, as in a muscle.
7. a protuberance in the tissue of a plant; an excrescence on a stem, branch, or root; a node or joint in a stem, esp. when of swollen form.
8. any of various fungal diseases of trees characterized by the formation of an excrescence, knob, or gnarl.
9. an involved, intricate, or difficult matter; complicated problem.
10. Naut. a. a unit of speed equal to one nautical mile or about 1.15 statute miles per hour.
b. a unit of 47 feet 3 inches (13.79 meters) on a log line, marked off by knots.
c. a nautical mile.
11. a bond or tie: the knot of matrimony. 12. Also calledjoint,node.Math.in interpolation, one of the points at which the values of a function are assigned.
13. tie the knot,Informal.to marry: They will tie the knot in November.
—v.t. 1. to tie in a knot; form a knot in.
2. to secure or fasten by a knot.
3. to form protuberances, bosses, or knobs in; make knotty.
—v.i. 1. to become tied or tangled in a knot.
2. to form knots or joints.
Pronunciation: (not),[key] —n. either of two large sandpipers, Calidris canutus or C. tenuirostris, that breed in the Arctic and winter in the Southern Hemisphere. Also called grayback.