monofilament

noun

1. Also mon·o·fil [mon–uh-fil] /ˈmɒn əˌfɪl/. a single, generally large filament of synthetic fiber.Compare multifilament(def 2).

adjective

2. made of such a filament: a monofilament fishing line.

noun

1. synthetic thread or yarn composed of a single strand rather than twisted fibres
2. a fishing line made of monofilaments