strengthener
1. [ noun ] a device designed to provide additional strength
Synonyms: reinforcement
Examples:

"the cardboard backing was just a strengthener," "he used gummed reinforcements to hold the page in his notebook"

Related terms: device brace backing brace safety_arch reinforce
Similar spelling:   strengthen
  strengthened
  strengthening
  sternwheeler
  Sternotherus
  steering_wheel
  string_cheese
  stringency
  string_tie
  stringently
  strangeness
  string_line
  strangler