Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “bolster”

bolster

verb [T]  /ˈboʊl·stər/ us  

bolster verb [T] (SUPPORT)

to support something, or make something stronger: The UN is sending more troops to bolster the peacekeepers.

bolster

noun [C]  /ˈboʊl·stər/ us  

bolster noun [C] (OBJECT ON BED)

a long pillow (= cloth bag filled with material), usually shaped like a tube
(Definition of bolster from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of bolster?
Browse related topics

You are looking at an entry to do with Physical supports and supporting, but you might be interested in these topics from the Objects topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “bolster” in other dictionaries

Word of the Day

knack

a skill or an ability to do something easily and well

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More