creosote creosote /ˈkriːəˌsoʊt/

noun

1. A dark oily liquid obtained by distillation of coal tar; used as a preservative for wood  ( coal-tar creosote , creosote )
   a dark oily liquid obtained by distillation of coal tar; used as a preservative for wood
   
   
2. A colorless or yellowish oily liquid obtained by distillation of wood tar; used as an antiseptic  ( creosote )
   a colorless or yellowish oily liquid obtained by distillation of wood tar; used as an antiseptic
   

verb

1. Treat with creosote  ( creosote )
   treat with creosote
    Creosoted wood
   creosoted wood
   

 arbalest arbalest /ˈɑːrbəlɛst/

noun

1. An engine that provided medieval artillery used during sieges; a heavy war engine for hurling large stones and other missiles  ( arbalest , arbalist , ballista , bricole , catapult , mangonel , onager , trebuchet , trebucket )
   an engine that provided medieval artillery used during sieges; a heavy war engine for hurling large stones and other missiles
   
   

 groined vault groined vault /ˈɡɹoʊɪnd vɔːlt/

noun

1. Two barrel vaults intersecting at right angles  ( groined vault )
   two barrel vaults intersecting at right angles
    The cathedral's groined vault was a marvel of medieval architecture.
   The cathedral's groined vault was a marvel of medieval architecture.
   
   

 diacetylmorphine diacetylmorphine /ˌdaɪəˈsɛtɪlˈmɔrfiːn/

noun

1. A narcotic that is considered a hard drug; a highly addictive morphine derivative; intravenous injection provides the fastest and most intense rush  ( diacetylmorphine , heroin , diamorphine )
   a narcotic that is considered a hard drug; a highly addictive morphine derivative; intravenous injection provides the fastest and most intense rush