meld

1. blend; combine.

   Australia's winemakers have melded modern science with traditional art

   the nylon bristles shrivel and meld together

1. a thing formed by melding; a combination.

   a meld of many contributions

1930s: perhaps a blend of melt and weld¹.

1. (in rummy, canasta, and other card games) lay down or declare (a combination of cards) in order to score points.

   a player has melded four kings

1. a completed set or run of cards in rummy, canasta, and other card games.

   his meld was poor and he lost

late 19th century (originally US): from German melden ‘announce’.