poster

英 [ˈpəʊstə(r)]

美 [ˈpoʊstər]

n. 招贴画; 海报; 巨幅装饰画; (在网络留言板上)发布消息的人，张贴信息的人

复数：posters　

Collins.2 / BNC.3930 / COCA.3834

牛津词典

noun

招贴画；海报
a large notice, often with a picture on it, that is put in a public place to advertise sth
1. election posters
  选举海报
2. a poster campaign (= an attempt to educate people about sth by using posters )
  招贴宣传运动
巨幅装饰画
a large picture that is printed on paper and put on a wall as decoration
1. posters of her favourite pop stars
  她所喜爱的流行音乐歌星的大幅画片
（在网络留言板上）发布消息的人，张贴信息的人
a person who posts a message on a message board (= a place on a website where people can read or write messages)

大幅广告；海报；招贴画
Aposteris a large notice or picture that you stick on a wall or board, often in order to advertise something.

noun

a horse kept at an inn or post house for use by mail carriers or for rent to travelers
Synonym:post horsepost-horse
a sign posted in a public place as an advertisement
1. a poster advertised the coming attractions
Synonym:postingplacardnoticebillcard
someone who pastes up bills or placards on walls or billboards
Synonym:bill posterbill sticker

Also to the question poster, this is not a real question.
还问到海报，这不是一个现实问题。
In the underground we see poster advertising holidays on spain.
在地铁站里，我们看到了为去西班牙度假作广告的海报。
Information is communicated and disseminated through symposia, lectures, scientific exhibitions, poster and platform presentations.
通过座谈会、演讲、科学展览、海报和展示平台沟通和传播这些信息。
Could you display this poster in your window?
你能把这张海报陈列在你的橱窗里吗？
The poster even makes an explanation that this is NOT a black-and-white picture.
为此，电影海报还做了解释，说他们没有使用黑白照片。
I have an idea for our poster.
我有个关于海报的想法。
The programme was organised in12 oral sessions and a poster session.
该方案举办了12届口头和海报会议。
Dave noticed that the poster was covered with little stars.
戴夫注意到海报上布满了小星星。
Oh! The boys have poster board and paint.
噢！男孩们有了招贴板和绘画工具。
But the poster tiger have same trips and posture with the photo tiger, what had happened?
可是，墙画虎与照片虎具有同样的虎纹和姿势，到底发生了什么呢？