harvester

Short definition from Wiktionary

Noun

1. 1
   A person who gathers the harvest (harvests the crop).
2. 2
   A machine that gathers the harvest (harvests the crop).
3. 3
   A type of heavy forestry vehicle employed in cut-to-length logging for felling, delimbing and bucking trees; an instance of this type.
4. 4
   A program or algorithm that gathers data from a source.
5. 5
   A North American butterfly species, Feniseca tarquinius, whose larvae eat aphids and are the only entirely carnivorous caterpillars in North America; an individual of this species.
6. 6
   Any butterfly of the lycaenid subfamily Miletinae to which this belongs, which are all carnivores.
7. 7
   A finnock (a young sea trout).