bolster

//ˈboʊl.stər//
B2Frequency Level 10Neutral
Visual representation of bolster

Verb

bolsterInfinitive
bolsterPresent tense
bolsteredPast tense
bolsteredPast participle
bolsteringPresent participle
bolstersThird-person singular
1

To support, strengthen, or reinforce something.

The new evidence bolstered her argument.

2

To prop up or hold in place with a cushion or pillow.

She bolstered her injured leg with a pillow.

Noun

bolsterSingular
bolstersPlural
1

A long, narrow pillow or cushion, typically placed under other pillows for support.

She placed a bolster under her regular pillow for extra neck support.

2

A structural part designed to provide support or eliminate friction.

The bolster in the machine helps reduce friction between the moving parts.