The Collaborative International Dictionary of English v.0.48:

Intercrop \In"ter*crop`\, v. t. & i. [imp. & p. p. -cropped;
   p. pr. & vb. n. -cropping.] (Agric.)
   To cultivate by planting simultaneous crops in alternate
   rows; as, to intercrop an orchard. Also, to use for catch
   crops at seasons when the ground is not covered by crops of
   the regular rotation.
   [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Intercrop \In"ter*crop`\, n. (Agric.)
   A crop grown among or between the rows of another crop; a
   catch crop.
   [Webster 1913 Suppl.]