A fragment of a human expression that is repeated by somebody else. Most often a quotation is taken from literature or speech, but also scenes from a movie, elements of a painting, a passage of music, etc., may be quoted.
"Where they burn books, they will also burn people" is a famous quotation from Heinrich Heine.
A price that has been quoted for buying or selling.
Let's get a quotation for repairing the roof before we decide whether it's worth doing.
The act of setting a price.
A quota, a share.