What is the meaning of Cooper?

A craftsman who makes and repairs barrels and similar wooden vessels such as casks, buckets and tubs.

A drink of half stout and half porter.

To make and repair barrels etc.

To forge or imitate (writing).

To intentionally injure (a racehorse) to spoil its chances of winning.

Alternative form of coper (floating grog shop)

Alternative form of coper (operate as floating grog shop)

Source: wiktionary.org