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mainstay

main·stay

mainstay

 
 
pronunciation:
meIn steI
part of speech: noun
definition 1: a strong rope or cable that holds and steadies the mast of a sailing ship.
definition 2: the main support of something.
Bread is the mainstay of many people's diet.
synonyms:
rock
similar words:
anchor, brace, prop, stay, support