noun. a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair, feathers, nails, and hooves.
- dress down
Example sentences of the word ceratin
1. Verb, past tense
Make ceratin the weight of the unit is adequately supported.
2. Noun, singular or mass
But it is a simple asphyxiant, so in ceratin cases a release of a large volume of argon can pose a hazard of asphyxiation.