'Towline' definitions:

Definition of 'towline'

(from WordNet)
noun
(nautical) a rope used in towing [syn: towline, towrope, towing line, towing rope]

Definition of 'Towline'

From: GCIDE
  • Towline \Tow"line`\, n. [AS. tohline. See Tow, v. t., and Line. ] (Naut.) A line used to tow vessels; a towrope. [1913 Webster]