1. (

• supporter ,
• protagonist ,
• champion ,
• admirer ,
• booster ,
• friend ,

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

2. (

• promoter ,
• booster ,
• plugger

) someone who is an active supporter and advocate ;

3. (

• booster ,
• shoplifter ,
• lifter ,

) a thief who steals goods that are in a store ;

4. (

• booster ,
• booster_amplifier ,
• booster_station ,
• relay_link ,
• relay_station ,
• relay_transmitter

) an amplifier for restoring the strength of a transmitted signal ;

5. (

• booster ,
• booster_rocket ,
• booster_unit ,
• takeoff_booster ,
• takeoff_rocket

) the first stage of a multistage rocket ;

6. (

• booster ,
• booster_dose ,
• booster_shot ,
• recall_dose

) an additional dose that makes sure the first dose was effective ;