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Webster 1913 Edition
Poster
Post′er
,Noun.
 1. 
A large bill or placard intended to be posted in public places. 
2. 
One who posts bills; a billposter. 
 Post′er
,Noun.
 1. 
One who posts, or travels expeditiously; a courier. 
“Posters of the sea and land.” Shak.
 2. 
A post horse. 
“Posters at full gallop.” C. Lever.
 Webster 1828 Edition
Poster
POSTER
,Noun.