Entry 1 sense Webster, 1913 Windlestrae · Win·dle·strae · IPA 01 n. A grass used for making ropes or for plaiting, esp. Agrostis Spica-ventis. 1. A grass used for making ropes or for plaiting, esp. Agrostis Spica-ventis.(Bot.) [Prov. Eng. & Scot.]