IPA: /ˈpeɪstər/
KK: /ˈpæstər/
A person or tool that applies paste, or a type of paper sticker used for sticking things together.
The artist used a paster to attach the decorations to the poster.
The word 'paster' originates from the Old French 'pasteur', meaning shepherd or one who leads. It refers to someone who tends to a flock, particularly in a religious context.
Think of a 'shepherd' ('pasteur') who leads and cares for a flock — that's why a 'paster' is someone who guides a congregation.