あざ (aza) Japanese meaning: birthmark | KotomoraHe has a large birthmark on his left arm.
Usage patterns
〈場所〉にあざができるa bruise forms on (a body part)
I fell and got a bruise on my knee.
あざが消えるa bruise fades/disappears
The bruise faded after about a week.
あざを隠すto hide/cover a mark on the skin
She covers the mark with makeup.
〈人〉の〈場所〉にあざがあるsomeone has a mark/birthmark on (a body part)
He has a small birthmark on the back of his neck.