To give birth to a foal (baby horse) by a mare (mother horse).
There is no special term for a horse birth, although it can be called "foaling."
Foaling. Foaling.
Foaling Foaling
Foaling.
Ideally, foaling takes place in a specially built large stall called a foaling stall. When foaling outside in a herd, mares often separate themselves to foal. A few seek out the company of a special horse friend (usually another mare) or the herd while foaling.
Foaling
No
Foaling.
Foaling
foaling
Post foaling, the mare's uterus needs to discharge remaining fluid and return to it's original size (involute). By around 10 days post foaling the mare has gone through foal heat and completed the "cleaning stage".
The mare should come back into heat (not including foaling heat) 21 days post foaling.