1.
cushion, throw pillow
A soft padded object used for sitting on or leaning against. In Japanese, distinct from まくら (sleeping pillow) and 座布団 (floor cushion).
Usage
Sense 1 refers to decorative throw pillows used on sofas and chairs. This is different from 座布団 (traditional Japanese floor cushion) and まくら (sleeping pillow).
Sense 2 is used figuratively for anything that absorbs impact or eases transition.