Collins Chinese Dictionary Plus (3rd edition), 2011:
垫(墊)
diànI 名
cushion
- 椅垫(墊) yǐdiàn chair cushion
- 鞋垫(墊) xiédiàn insole
II 动
1
(=铺) insert
- 她在桌子腿下垫(墊)了点(點)纸(紙)。 Tā zài zhuōzi tuǐ xià diànle diǎn zhǐ. She inserted a bit of paper under the table leg.
2
(=付钱) pay;
(pt, pp paid)
(pt, pp paid)
- 书(書)钱(錢)我先替你垫(墊)上。 Shūqián wǒ xiān tì nǐ diàn shàng. For now I'll pay for the book for you.
3
(=填补)
- 吃点(點)小菜,先垫(墊)垫(墊)肚子。 Chī diǎn xiǎocài,xiān diàndiàn dùzi. Have a snack - it'll take the edge off.