from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A covering of fine, soft hair, as on a leaf, an insect, or a newborn child.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The soft down or fine hair, specifically as covering the human foetus or a tumorous area
from the GNU version of the Collaborative International Dictionary of English
- n. The soft woolly hair which covers most parts of the mammal fetus, and in man is shed before or soon after birth.
from The Century Dictionary and Cyclopedia
- n. In anatomy, the coat of delicate downy hairs with which the human fetus is covered for some time before birth.
- n. In botany and zoology, the cottony or woolly growth on the surface of some leaves, fruits, insects, etc.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the fine downy hair covering a human fetus; normally shed during the ninth month of gestation
Middle English, pith, from Latin lānūgō, down, from lāna, wool.(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin lana ("wool") (Wiktionary)