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Definition of whetstone noun from the Oxford Advanced Learner's Dictionary

whetstone

noun
 
/ˈwetstəʊn/
 
/ˈwetstəʊn/
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  1. a stone that is used to make tools, knives and weapons sharp
See whetstone in the Oxford Advanced American Dictionary
ripple effect
noun
 
 
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Change, cause and effect
C2
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