1. (

• billboard ,
• hoarding

) large outdoor signboard ;

1. (

• hoard ,
• stash ,
• cache ,
• lay_away ,
• hive_up ,
• squirrel_away

) save up as for future use ;

2. (

• roll_up ,
• collect ,
• accumulate ,
• pile_up ,
• amass ,
• compile ,
• hoard

) get or gather together; "I am accumulating evidence for the man's unfaithfulness to his wife"; "She is amassing a lot of data for her thesis"; "She rolled up a small fortune" ;