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}.
[1913 Webster]
{To sail on a rhumb}, to sail continuously on one course,
following a rhumb line.
[1913 Webster]