In Biology
- Nail (anatomy), toughened keratin at the end of an animal digit
- Nail (beak), a plate of hard horny tissue at the tip of some bird beaks
Read more about this topic: Nail
Famous quotes containing the word biology:
“The “control of nature” is a phrase conceived in arrogance, born of the Neanderthal age of biology and the convenience of man.”
—Rachel Carson (1907–1964)
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