billboardbillboard /ˈbɪlbɔːd $ -bɔːrd/ noun [countable] a large sign used for advertising用于广告的大型告示牌un letrero grande usado para publicidadum grande painel usado para publicidade広告に使われる大型の看板광고에 사용되는 대형 간판 SYN hoarding British English► see thesaurus at advertisement