cushion noun
ADJ. plump, soft He sank back into the soft cushions of the sofa. | sofa
VERB + CUSHION plump (up) She plumped up the sofa cushions before the guests arrived.
CUSHION + NOUN cover
PREP. on a/the ~ I rested my elbow on a cushion.
You can also check other dicts: cushion (English, 中文解释 ), wordnet sense, Collins Definition