اِسْتَغْيَلَتْ
1.
, said of a woman, a verb of which the subst. is غِيلَةٌ [q. v.]: (K:) [according to the context in the K, in which the meaning is not clearly indicated, it seems to signify She suckled her child while being compressed, or while pregnant; like أَغَالَتْ for أَغَالَتْ وَلَدَهَا; and this I believe to be the right meaning: or] it signifies she was compressed while suckling a child, or while pregnant. (TK.)
2.
See also 5, first sentence.