Definition of pin fallow in English:

pin fallow

noun

English Regional, Midlands, Northern
  • The action or an act of leaving land fallow for a limited period after ploughing, especially during the winter; land that lies fallow during the winter; a period during which land lies fallow.

Origin

Late 17th century; earliest use found in Randle Holme (1627–1700), herald painter. From a first element of uncertain origin + fallow.

Pronunciation

pin fallow

/ˈpɪn ˌfaləʊ/