布 as a standalone noun means 'cloth/fabric.' In compounds it often means 'to spread/announce': 发布 (fābù, to publish), 宣布 (xuānbù, to announce), 分布 (fēnbù, to distribute).
culture
In rock-paper-scissors (石头剪刀布, shítou jiǎndāo bù), 布 represents 'paper/cloth' — the one that wraps stone.