Adjective
Pertaining to the cuticle, or external coat of the skin; epidermal.
Source: Webster's dictionaryEach stereocilium inserts as a rootlet into a dense filamentous actin mesh known as the cuticular plate. Source: Internet
The tracheae are invaginations of the cuticular exoskeleton that branch ( anastomose ) throughout the body with diameters from only a few micrometres up to 0.8 mm. Source: Internet