to stroke down; to smooth down
to be relieved; to feel relieved
全員の無事が確認され、ようやく胸を撫で下ろした。
Once everyone's safety was confirmed, we finally breathed a sigh of relief.
赤ちゃんの背中を撫で下ろしている。
She is gently stroking the baby's back.
子供の頭を優しく撫で下ろす。
She gently strokes the child's head.