To talk with excessive pride
An act of boasting
If he said so, he was speaking of the Ptolemaic cosmogony as known to him through the Arabs, and his vaunt was a humorous proof of his scientific instinct.
The Afghans vaunt the salubrity and charm of some local climates, as of the Toba hills above the Kakar country, and of some of the high valleys of the Safed Koh.
They were a power strong enough to give the Pharaoh cause to vaunt his success (see also Egypt: Ancient History, § " The New Empire ").