types:
raie
a line of scalp that can be seen when sections of hair are combed in opposite directions
axe
a straight line through a body or figure that satisfies certain conditions
crête
the top line of a hill, mountain, or wave
cercle
a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center
ourlet
the line formed by the lower edge of a skirt or coat
horizon
the line at which the sky and Earth appear to meet
isogramme
a line drawn on a map connecting points having the same numerical value of some variable
route,
voie
an established line of travel or access
rhumb
a line on a sphere that cuts all meridians at the same angle; the path taken by a ship or plane that maintains a constant compass direction
ligne de flottaison
a line corresponding to the surface of the water when the vessel is afloat on an even keel; often painted on the hull of a ship
cours
a line or route along which something travels or moves
piste,
voie
(computer science) one of the circular magnetic paths on a magnetic disk that serve as a guide for writing and reading data
couloir aérien
a designated route followed by airplanes in flying from one airport to another
circuit
a regular route for a sentry or policeman
isobare
(meteorology)an isogram connecting points having equal barometric pressure at a given time
isotherme
(meteorology) an isogram connecting points having the same temperature at a given time
longitude
an imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator
circuit
the (usually elliptical) path described by one celestial body in its revolution about another
andain
a path or strip (as cut by one course of mowing)
trace,
traînée
a track or mark left by something that has passed