
1) Any compass point 2) Any point of the compass 3) Compass point 4) Line 5) Loxodrome 6) Point on a compass card 7) Rhumb line
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1) Ese 2) Loxodrome
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compass point
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http://phrontistery.info/r.html

• (n.) A line which crosses successive meridians at a constant angle; -- called also rhumb line, and loxodromic curve. See Loxodromic.
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http://thinkexist.com/dictionary/meaning/rhumb/

<astronomy> 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. ... Origin: F. Rumb, Sp. Rumbo, or Pg. Rumbo, rumo, probably fr. Gr. A magic wheel, a whirling motion, hence applied to a point...
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http://www.encyclo.co.uk/local/20973
Rhumb noun [ French
rumb , Spanish
rumbo , or Portuguese
rumbo ,
rumo , probably from Greek ......... 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 a...
Found on
http://www.encyclo.co.uk/webster/R/78
No exact match found.