What is the meaning of Nayl?

A nail (fingernail or toenail).

A nail (metal fastening pin):

  1. A bothersome predicament or annoyance.
  2. A decisive point in a debate or disagreement.

A bothersome predicament or annoyance.

A decisive point in a debate or disagreement.

A nail (unit of longness or mass)

The equivalent to a human nail in animals (e.g. a claw)

An ocular malady present in humans and animals.

Source: wiktionary.org