Source : Webster's Revised Unabridged Dictionary (1913)

Spurling-line \Spur"ling-line`\, n. [Cf. Prov. E. spurling the
   rut of a wheel, a cart rut, AS. spor a track, trace, E.
   spoor. Scot. spurl to sprawl.] (Naut.)
   The line which forms the communication between the steering
   wheel and the telltale.