SkyfireDict

impenetrable   (TTS Sound)

The adj impenetrable has 3 senses

• impenetrable -- (not admitting of penetration or passage into or through; "an impenetrable fortress"; "impenetrable rain forests")


• dense, heavy, impenetrable -- (permitting little if any light to pass through because of denseness of matter; "dense smoke"; "heavy fog"; "impenetrable gloom")


• impenetrable -- (impossible to understand; "impenetrable jargon")