understocking means A stocking intended to be worn under another stocking. Lexicurio rates it Sui generis — a strength score of 88 out of 100.
Etymology
From under- + stocking.
noun
- A stocking intended to be worn under another stocking.“On the 1st of February of 1715 I received the dues of La Cañada, three bushels of wheat; eight sacks and a half of maize; some cotton-thread understockings worth 3 pesos, and two pairs of gloves;”