Language grounding is the research area investigating the fundamental problem of how linguistic symbols and structures acquire meaning by being connected to non-linguistic representations derived from perception, action, and interaction with the environment. This field examines the mechanisms by which agents (human or artificial) establish correspondences between language and sensory-motor experiences or abstract concepts, emphasizing situatedness, embodiment, and the integration of multimodal information. Its significance is paramount for understanding cognitive processes of language acquisition and comprehension, and for developing artificial intelligence and robotic systems capable of truly understanding and interacting with the physical and conceptual world through language.