solder solder /ˈsɑːdɝ/

noun

1. An alloy (usually of lead and tin) used when melted to join two metal surfaces  ( solder )
   an alloy (usually of lead and tin) used when melted to join two metal surfaces
    He used a solder to join the two metal pieces together
   He used a solder to join the two metal pieces together
   
   

verb

1. () Join or fuse with solder  ( solder )
   join or fuse with solder
    Solder these two pipes together
   solder these two pipes together