رج

4 أَرَجَّتْ ذ She (a mare) was near to bringing forth, and the part on either side of her tail (صَلَاهَا) quivered, or quaked; (K;) as also ↓ اِرْتَجَّتْ. (TA.) The part. n. applied to the mare in this case is ↓ مُرِجٌّ [without ة]. (K.)