/ee"geuhr, ay"geuhr/ , n. Chiefly Brit.
a tidal bore or flood.
Also, eager .
[ 1640-50; appar. repr. earlier agar, ager, obscurely akin to hyger, higre; (cf. AL (12th century) higra the tidal bore of the Severn); compared with OE egor, eogor flood, high tide, though preservation of g in modern forms is problematic ]