hog coltn. now rare (in later use chiefly English regional (south-western)) a yearling colt.
ΘΚΠ
the world > animals > mammals > group Ungulata (hoofed) > family Equidae (general equines) > horse defined by gender or age > [noun] > male > colt > of specific age
hog colt1591
three-years1617
hogget1787
1591 R. PercyvallBibliotheca Hispanica Dict. at Potrico A hog colt.
1705 in J. S. Moore Goods & Chattels Forefathers (1976) 178 Three mares and one hogg-colt £11 0s 0d.
1858 Bristol Mercury 30 Oct. 1/1 One hog colt, two weaning colts.