استكرشت الإِنْفَحَةُ

The stomach of a sucking kid became a كَرِش: (S, K:) i. e., when he pastured upon herbage; (K;) for it is called انفحة as long as the kid does not eat; but when he eats, it is called كرش. (S.)

Also استكرش He (a kid, and a boy,) became large in his stomach: or became hard in his palate, and wide in his belly, after he had become large: (TA:) or he (a lamb or kid or calf) became large in his belly: (IAar:) or he (a lamb or kid) became large in his belly, and ate much: (TA:) or he (a kid, A, and a boy, Az, TA) became large in his belly, and began to eat: (Az, A, TA,) but some disapprove of its being said of a boy, asserting that one says of a boy إِسْتَجْفَرَ. (TA.)

See also 2.