n.

1. 褥墊，床墊[C]
   He kept his life's savings under his mattress.

   他將他一輩子的積蓄藏在床墊下。

n.

1. a fabric case filled with soft, firm, or springy material used for sleeping on.
2. Engineering  a flat structure of brushwood, concrete, or other material used as strengthening for foundations, embankments, etc.

[名]

1. 彈簧床墊。