catch colt
According to The
Dictionary of
American Regional English:
"catch colt n ...
chiefly
West, Inland Nth See Maps
1 The offpsring of a mare bred accidentally.
1940-41
Cassidy !
WI Atlas csWI,, Catch-- Colt that was unintentionally bred. 1958 AmSp 33.271,
Ketch-colt. An offspring obviously not from the herd sire.
2 By ext: a child born out of wedlock."