The Collaborative International Dictionary of English v.0.48:
Farm \Farm\, v. t. [imp. & p. p. Farmed; p. pr. & vb. n.
1. To lease or let for an equivalent, as land for a rent; to
yield the use of to proceeds.
We are enforced to farm our royal realm. --Shak.
2. To give up to another, as an estate, a business, the
revenue, etc., on condition of receiving in return a
percentage of what it yields; as, to farm the taxes.
To farm their subjects and their duties toward
3. To take at a certain rent or rate.
4. To devote (land) to agriculture; to cultivate, as land; to
till, as a farm.
To farm let, To let to farm, to lease on rent.