What is "to let to farm"

Farm \Farm\, v. t. [imp. & p. p. Farmed; p. pr. & vb. n. Farming.]

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 these.
   --Burke.

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.