اِجْثَأَلَّ

He (a bird) ruffled his feathers (S, K) by reason of the cold. (TA.)

(assumed tropical:) He (a man) became angry, and prepared himself for fighting. (S, K.)

(assumed tropical:) It (a plant, or herbage,) became tall, and tangled, or luxuriant, or abundant and dense: (Z, K:) or became tall (اِهْتَزَّ, q. v.), and such as might be grasped with the hand. (AZ, S, K.)

It (the plumage of a bird) became ruffled. (K.)