suffix
covered with; stained; smeared
Suffix attached to nouns indicating something is covered or smeared with that substance, often with a messy or unpleasant nuance. Common in words like 血みどろ (bloodstained) and 泥みどろ (muddy).
彼は血みどろになって戦った。
He fought, covered in blood.
子供たちは泥みどろで遊んでいた。
The children were playing, covered in mud.