"dunes" in the noun sense
1. dune, sand dune
a ridge of sand created by the wind found in deserts or near lakes and oceans
"dunes" in the verb sense
1. torment, rag, bedevil, crucify, dun, frustrate
"The children tormented the stuttering teacher"
persistently ask for overdue payment
"The grocer dunned his customers every day by telephone"
cure by salting
make a dun color
Source: WordNet® (An amazing lexical database of English)
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