From Longman Dictionary of Contemporary Englishwashing lineˈwashing line noun [countable, uncountable] British EnglishDHC a piece of string stretched between two poles that you hang wet clothes on so that they can dry outside SYN clothesline
Examples from the Corpus
washing line• There was hardly room for a washing line in the back.• Let there be shirts on a washing line.• That is, with a path slap down the middle, a flanking washing line and four narrow borders around the edge.• The levels have been carefully graded back towards the house and there is room here for the rotary washing line. 