chafing gear n 1: covering (usually rope or canvas) of a line or spar to protect it from friction
Chafing \Chaf"ing\, n. [See {Chafe}, v. t.] The act of rubbing, or wearing by friction; making by rubbing. [1913 Webster] {Chafing dish}, a dish or vessel for cooking on the table, or for keeping food warm, either by coals, by a lamp, or by hot water; a portable grate for coals. {Chafing gear} (Naut.), any material used to protect sails, rigging, or the like, at points where they are exposed to friction. [1913 Webster]