To dream of seeing knots, denotes much worry over the most trifling affairs. If your sweetheart notices another, you will immediately find cause to censure him. To tie a knot, signifies an independent nature, and you will refuse to be nagged by ill-disposed lover or friend.   

a unit of speed equal to one nautical mile (1.852 km) per hour, approximately 1.151 mph.

        The speed in nautical miles per hour, a vessel is travelling.

nautical miles per hour. A nautical mile is 1.15 statute miles.

A measure of speed, nautical miles per hour. A nautical mile is 6,000', which is about 1/6 longer than a statute mile, so knots is roughly 1 and 1/6 faster than the mph we're used to. Here are some common speeds:

A knot is one nautical (or knotical) mile per hour (approx: 1.151 MPH).  

Speed in nautical miles per hour. 1 knot is approximately equal to 1.15 miles per hour.

If a regression will be run to estimates different linear slopes for different ranges of the independent variables, it's a spline regression, and the endpoints of the ranges are called knots. The [..]

knot|lang=en