what does audiovisual aid mean?

AUDIOVISUAL AID as NOUN

Meaning
- materials using sight or sound to present information
Synonym(s)
- audiovisual (what does audiovisual mean?)
Usage Example(s)
- language tapes and videocassettes and other audiovisuals
Hypernyms(s) audiovisual aid is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
- teaching aid (what does teaching aid mean?)