noun
winter moth
Refers to moths of the family Geometridae that are active in winter. The term is primarily used in biological or nature-related contexts.
冬の森でフユシャクを見つけた。
I found a winter moth in the winter forest.
From 冬 (fuyu, 'winter') and 尺 (shaku, 'measuring stick'), referring to the inchworm-like movement of Geometridae larvae. The katakana spelling is standard for this insect name.