Definitions for "Discarding"
The disposal of dead or live catch during or after fishing operations (see bycatch).
the disposal (or ‘dumping' or ‘trashing') of unsaleable catch, dead or alive, during or after fishing operations.
Keywords:  led, throw, suit, card, preferably
Playing a card not of the same suit as the card led, preferably to give useful information to partner.
the throw away cards from your hand