Frae Wikipedia, the free beuk o knawledge

Rur (a wee furm o rooder) is a Shetland wird for a craitur o the infraclass Cirripedia kent fae bidin upo clumpers like lempits. Whiles rur can e'en be uised whan meanin lempit.

Ither furms o the wird includes rooder, röeder, ruder, rooddir, rhur, an rør,