the middle section of a two-part structure (related to anatomy)

a passage or an opening (used in other contexts)

एक मार्ग या उद्घाटन

English Usage: The middle meatus of the ear was blocked, causing hearing problems.

Hindi Usage: कान का मध्य मेआटस अवरुद्ध हो गया था, जिससे सुनने में समस्या हुई.