1. the inner parts or contents of something
Usage: plural form
2. the internal organs of a person or animal
Usage: informal; plural form

Examples

• The insides of the old building were completely renovated.
• She cleaned out the insides of the pumpkin before carving it.
• The mechanic examined the insides of the engine.
• The insides of the watch were incredibly complex.
• After the accident, he felt pain in his insides.
• The cat brought a mouse with its insides showing.