English: rolling strike action
Welsh: streic dreigl
Subject: Gwleidyddiaeth
Welsh definition: A strike consisting of a coordinated series of consecutive limited strikes by small groups workers. 
Plural: streiciau treigl
Notes: Gellid hefyd ddefnyddio’r ffurf ferfol “streicio treigl” yn ôl yr angen a’r cyd-destun.