1. strengthener - noun
ยท a device designed to provide additional strength; "the cardboard backing was just a strengthener"; "he used gummed reinforcements to hold the page in his notebook"
Synonym(s): reinforcement
Hypernym(s): device
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ยท a device designed to provide additional strength; "the cardboard backing was just a strengthener"; "he used gummed reinforcements to hold the page in his notebook"
Synonym(s): reinforcement
Hypernym(s): device