- The definition of a tentacle is a flexible arm used to touch and grab things, or the sensitive hairs on a plant leaf.
An example of a tentacle is one of the eight arms of an octopus.
The tentacles of an octopus.
- any of a variety of long, slender, flexible growths, as about the head or mouth of some invertebrate animals, used variously for grasping, feeling, moving, etc.
- Bot. any of various sensitive hairs on the leaves of some plants, as those used in capturing insects
Origin of tentacleModern Latin tentaculum ; from Classical Latin tentare, to touch: see tent
- Zoology a. An elongated flexible unsegmented extension, as one of those surrounding the mouth of a sea anemone, used for feeling, grasping, or locomotion.b. One of these structures in a cephalopod, typically being retractile and having a clublike end usually with suckers or hooks, in contrast to an arm, which is nonretractile and typically has suckers along the underside.
- Botany One of the sensitive hairs on the leaves of certain insectivorous plants, such as a sundew.
- A similar part or extension, especially with respect to the ability to grasp or stretch: an espionage network with far-reaching tentacles.
Origin of tentacleNew Latin tentāculum, from Latin tentāre, to feel, try; see tentative.
From New Latin tentaculum, from tentō.