devadeva : [m.] the god of gods.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

○deva m. 'the god of gods', N: of Brahmā MBh. i, 1628
• of Rudra-Śiva, 7324
• of Vishṇu-Kṛishṇa Bhag. x, 15
• of Gaṇêśa Kathās. xx, 55
• du. Brahmā and Śiva MBh. viii, 4456
• pl. the Brāhmans BhP. iii, 16, 17
• (ī), f. N. of Durgā, Hcat: i
• ○vêśa m. 'lord of the chiefs of the gods', N. of Śiva MBh. i, 8123: of Indra, iii, 17191
• of Vishṇu, xii, 12864
 

Sanskrit-English Dictionary, by M. Monier William