Synonyms of 'dyke'
wallDictionary, barrier, dam
I then slid down the side of the dyke.
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A barrier is something such as a fence or wall that is put in place to prevent people from moving easily from one area to another.
The demonstrators broke through the heavy police barriers.
A dam is a wall that is built across a river in order to stop the water flowing and to make a lake.
They went ahead with plans to build a dam across the river.
Thesaurus for dyke from the Collins English Thesaurus
A dyke is a thick wall that is built to stop water flooding onto very low-lying land from a river or from the sea.