دُلْفِينٌ

[The dolphin;] a certain fish, (T,) or beast, (S, K, [apparently thus termed because it is a mammal,]) of the sea, (T, S, K,) that saves him who is drowning; (S, K;) also called دُخَسٌ; and abounding in the Sea of Dimyát [or Damietta]. (TA.)

الدُّلْفِينُ (assumed tropical:) [The constellation Delphinus;] one of the northern constellation, which comprises ten stars, and follows النَّسْرُ الطَّايءِرُ [ α and β and γ of Aquila]: the bright star on its tail is called ذَنَبُ الدُّلْفِينِ. (Kzw.)