Assertion: american cockroach's wing | /r/HasProperty | leathery
Facets:
Source sentences:
text: Outer wings are strong and leathery and they protect the body from potential predators.
text: The wings in front are tough and leathery, while the smaller wings behind them have more of a glassy, hyaline appearance.
text: but, when these are present, the fore wings are thick and leathery and the hind wings are thin and fan-like.