Definitions for "coupled"
Keywords:  trainer, horse, entry, race, bet
an entry of two or more horses entered in a race counted as one betting interest because of a common trainer and/or owner.
Two or more horses that have the same owners or trainers are said to be coupled. These horses run as an "entry," and a bet on one horse automatically includes the other.
Two or more horses running as an entry in a single betting unit.
connected by a physical link, as railway cars or trailer trucks. Opposite of unconnected or unlinked
joined together especially in a pair or pairs.