penetrate /ˈpɛnɪtɹeɪt/ verb6 •To enter into; to make way into the interior of; to pierce.Light penetrates darkness. •To infiltrate an enemy to gather intelligence. •To insert the penis into an orifice, such as a vagina, mouth, or anus.a male elephant comes up and penetrates the female •To move a piece past the defending pieces of one's opponent. •(figurative) To achieve understanding of, despite some obstacle; to comprehend; to understand.I could not penetrate Burke's opaque rhetoric. •To affect profoundly through the senses or feelings; to move deeply.The translator of Homer should penetrate himself with a sense of the plainness and directness of Homer's style. — 1867 formspenetrated · penetrating · penetrates · penetratest