The Collaborative International Dictionary
Rhumb \Rhumb\, n. [F. rumb, Sp. rumbo, or Pg. rumbo, rumo, probably fr. Gr. ??? a magic wheel, a whirling motion, hence applied to a point of the compass. See Rhomb.] (Navigation) A line which crosses successive meridians at a constant angle; -- called also rhumb line, and loxodromic curve. See Loxodromic.
To sail on a rhumb, to sail continuously on one course, following a rhumb line.
n. (context nautical English) A line that cuts all meridians at the same angle, the path of a vessel that maintains a constant compass direction.
A rhumb line is, together with the Great Circle Arc and an isoazimuthal, one of the three lines that can be drawn between any two points on the earth's surface.
Rhumb Line is a two-player abstract strategy board game by Martin H. Samuel, played with glass pieces on mousepad-type material, using placement and point accumulation to win. The game board and instructions have a nautical theme, based in part on the concept of the rhumb line and historic games played by sailors.
Usage examples of "rhumb line".
And the straight line drawn on the chart did not waver in its straightness, and as far as Fleming would know--for he, as the frequent bursts of machine gun fire testified, was not overly interested in navigation--the launch was still hugging closely the rhumb line to Venusburg.