洞穿 (dòng chuān) is a compound verb meaning 'to penetrate thoroughly' or 'to pierce completely through'. Literally, 洞 (dòng) means 'cavity', 'hole', or 'thorough insight', and 穿 (chuān) means 'to pierce', 'to pass through', or 'to penetrate'. Together, they emphasize complete, unobstructed penetration — not just surface-level contact but going all the way through to the other side. The word often carries a vivid, forceful connotation, suggesting decisive, unstoppable action.

It’s commonly used in both literal and figurative contexts: physically (e.g., a bullet洞穿 a wall), perceptually (e.g., eyes洞穿 deception), or intellectually (e.g., a theory洞穿 social illusions). While formal and literary, it appears frequently in news reports, essays, and descriptive writing — rarely in casual speech. It typically takes a direct object and does not require aspect particles like 了 or 过 unless emphasizing completion or experience.