varied organ found in many animals, especially cephalopods, and used for palpation and manipulation

A tentacle is a part of the body of an animal or plant that can move freely. They are like arms. Some invertebrates, like squid, sea anemones or hydras have them. They use the tentacles to catch food, or to grip the sourroundings. Some carnivorous plants, such as the Drosera, also may have tentacles.