Definition of bolster

acrimonious Definition: (adjective) biting, harsh, caustic. Petersons.com

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< bolson

bolt >

bol·ster    (blstr) KEY  

NOUN:

A long narrow pillow or cushion.

TRANSITIVE VERB:
bol·stered , bol·ster·ing , bol·sters

1. To support or prop up with or as if with a long narrow pillow or cushion.
2. To buoy up or hearten: Visitors bolstered the patient's morale.

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ETYMOLOGY:
Middle English, from Old English; see bhelgh- in Indo-European roots

OTHER FORMS:
bolster·er (Noun)

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