glue gun
US /ˈɡluː ɡʌn/
UK /ˈɡluː ɡʌn/
1.
a device that heats and melts sticks of solid adhesive, allowing it to be applied as a liquid and then solidify to bond materials together
:
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She used a glue gun to attach the decorations to the wreath.
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Make sure the glue gun is fully heated before you start.