noun (n)

• someone concerned with the science or art or business of cultivating the soil(noun.person)

  Synonym:
  agriculturalist, agriculturist, grower, raiser
  

  source: wordnet30
• a farm implement used to break up the surface of the soil (for aeration and weed control and conservation of moisture)(noun.artifact)

  Synonym:
  tiller
  

  source: wordnet30
• One who cultivates; as, a cultivator of the soil; a cultivator of literature.(noun)

  source: webster1913