knot

1a. An intertwine of a rope or string, usually either by itself or in pairs, which often serves to fasten something together (i.e. lacing shoes) or prevention of i.e. beads falling from a string. 1b. The act itself of tying things together. 2a. The thicker or harder part of a typically cylindrical object (i.e. a log of wood). 2b. (1) The bulbus glandis at the base of i.e. the canine phallus. 2b. (2) The act of mating dogs becoming stuck together at the genital region as a result of the swelling of this organ during copulation. 2c. A firm, swollen area of the flesh often coinciding with a severe bruise. 3a. Shorthand for "nautical mile". 3b. A measurement of speed using this unit.