及物动词

1. 增强（信心）；鼓舞（士气）
If you bolster something such as someone's confidence or courage, you increase it.

2. 巩固（地位）；加强
If someone tries to bolster their position in a situation, they try to strengthen it.

3. （垫在普通枕头下的）长枕，垫枕
A bolster is a firm pillow shaped like a long tube which is sometimes put across a bed under the ordinary pillows.

相关词组：bolster up

1. a pillow that is often put across a bed underneath the regular pillows

Synonym: long pillow