1.
a drawback or difficulty that is not readily evident
2.
something unspecified whose name is either forgotten or not known
3.
any clever maneuver
it was a great sales gimmick
a cheap promotions gimmick for greedy businessmen
Consuming chocolate was once considered a sin during the 16th and 17th century. During that time it was provided in the form of a drink and since drinking wine during lent was a sin, so was drinking chocolate.