I. ˈbüst verb
Etymology: origin unknown
Date: 1801
transitive verb
1. : to push or shove up from below
2. : increase , raise
plans to boost production
an extra holiday to boost morale
3. : to promote the cause or interests of : plug
a campaign to boost the new fashions
4. : to raise the voltage of or across (an electric circuit)
5. slang : steal , shoplift
intransitive verb
slang : shoplift
Synonyms: see lift
II. noun
Date: 1801
1. : a push upward
2. : an act that brings help or encouragement : assist
3. : an increase in amount