billboard

UK: /ˈbɪlbɔː^rd/ US: /ˈbɪlˌbɔrd/ ,(bil′bôrd′, -bōrd′)

WordReference Random House Learner's Dictionary of American English © 2026

bill•board¹ /ˈbɪlˌbɔrd/   n. [countable]

1. a flat surface on which large advertisements or notices are posted:
   Billboards were banned from most of that highway.

WordReference Random House Unabridged Dictionary of American English © 2026

bill•board¹  (bil′bôrd′, -bōrd′), n. 

1. a flat surface or board, usually outdoors, on which large advertisements or notices are posted.

v.t. 

2. to place, advertise, proclaim, etc., on or as if on a billboard:
   The movie was billboarded as the year's biggest hit.

• bill¹ + board 1850–55, American.

bill•board²  (bil′bôrd′, -bōrd′), n. [Naut.]

1. Nautical, Naval Terms See anchor bed. 

• bill³ + board 1855–60

Collins Concise English Dictionary © HarperCollins Publishers::

billboard / ˈbɪlˌbɔːd/ noun

1. another name for hoarding

Etymology: 19th Century: from bill¹ + board