The channel through which milk is delivered from the mammary glands to the nipple.

दूध पहुँचाने वाली नली

English Usage: The lactiferous duct becomes more prominent during pregnancy.

Hindi Usage: गर्भावस्था के दौरान दूध पहुँचाने वाली नली अधिक प्रमुख हो जाती है।