D defs.my
Entry 1 sense Webster, 1913

Lanugo

· La·nu·go · IPA /ləˈnjuːɡəʊ/
01 n. The soft woolly hair which covers most parts of the mammal fetus, and in man is shed before or soon after birth.
  1. 1.
    The soft woolly hair which covers most parts of the mammal fetus, and in man is shed before or soon after birth.(Anat.)