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Related to loach: Weather loach
Any of various Eurasian and African freshwater fishes of the family Cobitidae and related families of the order Cypriniformes, having barbels around the mouth.
[Middle English loche, from Old French, possibly from Vulgar Latin *laukka, slug, loach, perhaps from Gaulish *leuca, slug, loach, feminine (attested as a feminine name Leuca), of Gaulish *leucos, bright, light (slugs perhaps originally being so called in reference to their whitish, glistening appearance, while the elongated, mottled body and barbels of Cobitis taenia, a European loach esteemed as a food fish, were later likened to the body and ommatophores of the leopard slug Limax maximus, a large, common slug of Europe); see leuk- in the Appendix of Indo-European roots.]
(Animals) any carplike freshwater cyprinoid fish of the family Cobitidae, of Eurasia and Africa, having a long narrow body with barbels around the mouth
[C14: from Old French loche, of obscure origin]
(Biography) Ken(neth). born 1936, British television and film director; his works for television include Cathy Come Home (1966) and his films include Kes (1970), Riff-Raff (1991), Bread and Roses (2000), The Wind that Shakes the Barley (2006), and The Angels' Share (2012)
any slender freshwater fish of the family Cobitidae, having barbels around the mouth.
[1325–75; Middle English loche < Middle French]