A picker is a person who harvests crops, such as fruits or vegetables, by hand. They use their knowledge and skill to select only the best produce, carefully choosing each piece based on its ripeness, quality, and appearance. The term can also refer to someone who collects items of value that others have discarded or overlooked, such as antiques or valuable scraps. In this sense, a picker is an opportunist who sees potential in what others deem worthless.