1. a long, flexible arm-like appendage of an animal, especially an octopus or squid, used for grasping, moving, or sensing
Usage: biology
2. something that resembles a tentacle in form or function, especially something that extends outward to grasp or control
Usage: figurative

Examples

• The octopus wrapped its tentacles around the crab.
• Each tentacle of the jellyfish can deliver a painful sting.
• The squid uses its tentacles to catch prey in the deep ocean.
• The corporation extended its tentacles into every aspect of the industry.
• Sea anemones wave their colorful tentacles in the current.
• The alien creature in the movie had dozens of writhing tentacles.