n.
Function: transitive verb
Inflected Form: bol · stered ; bol · ster · ing \ -st( ə -)ri ŋ \
Date: 15th century
1 : to support with or as if with a bolster : REINFORCE
2 : to give a boost to <news that bolster ed his spirits>
– bol · ster · er \ -st ə r- ə r \ noun