BOOST
NOUNS
20C.. ► SHOT IN THE ARM a boost or act of encouragement → sl.
1945 ► BUMPER a boost up → Amer. dial.
1950 ► WRAP a boost, a commendation → Aust. & NZ sl.
VERBS
L19.. ► GAG to boost, to persuade, to promote → sl.
1950 ► UP to boost, to improve; to promote → sl., orig. US
Lexicophilia 