A grapefruit spoon is a utensil usually similar in design to a teaspoon

Teaspoon

A teaspoon, an item of cutlery, is a small spoon, commonly part of a silverware place setting, suitable for stirring and sipping the contents of a cup of tea or coffee...

 that tapers to a sharp edge or teeth, the intent of the front serration

Serrated blade

A serrated blade is a type of blade used on saws and on some knives or scissors. It is also known as a dentated, sawtooth, or toothed blade.A serrated blade has a cutting edge that has many small points of contact with the material being cut...

 being to separate the flesh of a grapefruit

Grapefruit

The grapefruit , is a subtropical citrus tree known for its sour fruit, an 18th-century hybrid first bred in Barbados. When found, it was named the "forbidden fruit"; it has also been misidentified with the pomelo or shaddock , one of the parents of this hybrid, the other being sweet orange The...

 from its rind. Also called orange spoon, it is used for other citrus fruits, as well as kiwifruit

Kiwifruit

The kiwifruit, often shortened to kiwi in many parts of the world, is the edible berry of a cultivar group of the woody vine Actinidia deliciosa and hybrids between this and other species in the genus Actinidia....

 and melons.

A variation of the design has a blunt front edge with serrated sides, enabling the user to dig the spoon into the fruit before using the serrated side edges as a knife to separate the flesh from the rind.

These spoons are not generally found in most cutlery

Cutlery

Cutlery refers to any hand implement used in preparing, serving, and especially eating food in the Western world. It is more usually known as silverware or flatware in the United States, where cutlery can have the more specific meaning of knives and other cutting instruments. This is probably the...

sets but may be purchased separately from specialty stores.