BT BB 73b(29) :סברנא דליכא מיא דנפישן‏ : we thought that the water was not deep
See the entire entry for np̄īš adj. substantial; refreshed

BT BB 73b(29) :למיחת לצנוני נפשין‏ : to go down to cool ourselves down
See the entire entry for ṣnn vb. to cool down