noun
black-dyed leather; deep indigo-dyed leather
Refers to leather that has been dyed black or a very dark indigo, often used in traditional crafts or clothing. The indigo-dyed sense is a specific traditional variant.
この財布は黒革でできている。
This wallet is made of black-dyed leather.
藍で染めた黒革は独特の深い色合いを持つ。
Leather dyed in deep indigo has a unique, deep hue.
noun
edible mushroom (Thelephoraceae family)
A type of edible mushroom; the name likely comes from its dark, leathery appearance. Not a common everyday food; more of a regional or foraged item.
黒革というキノコは、見た目は黒くて革のようだ。
The mushroom called 黒革 looks black and leathery.
Compound of 黒 (black) and 革/皮 (leather/skin). The mushroom sense is a metaphorical extension based on its dark, leather-like appearance.