n. [ See Rusma. ] A mixtire of caustic lime and orpiment, or tersulphide of arsenic, -- used in the depilation of hides. Knight. [ 1913 Webster ]
n. [ F. rumb, Sp. rumbo, or Pg. rumbo, rumo, probably fr. Gr. &unr_;&unr_;&unr_; 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
To sail on a rhumb,
n. [ F. rumb, Sp. rumbo, or Pg. rumbo, rumo, probably fr. Gr. &unr_;&unr_;&unr_; 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
To sail on a rhumb,