The Collaborative International Dictionary of English v.0.48:
Pinfold \Pin"fold`\, n. [For pindfold. See Pinder, Pound an inclosure, and Fold an inclosure.] A place in which stray cattle or domestic animals are confined; a pound; a penfold. --Shak. [1913 Webster] A parish pinfold begirt by its high hedge. --Sir W. Scott. [1913 Webster]WordNet (r) 3.0 (2006):
pinfold n 1: a pen where stray animals are confined