booster (French)

Noun

a person who backs a politician or a team etc.; "all their supporters came out for the game"; "they are friends of the library"

Noun

someone who is an active supporter and advocate

Noun

a thief who steals goods that are in a store

Noun

an amplifier for restoring the strength of a transmitted signal

Noun

the first stage of a multistage rocket

Noun

an additional dose that makes sure the first dose was effective