tidal bore
n 1: a high wave (often dangerous) caused by tidal flow (as by
colliding tidal currents or in a narrow estuary) [syn:
{tidal bore}, {bore}, {eagre}, {aegir}, {eager}]
Eagre \Ea"gre\, n. [AS. e['a]gor, ?gor, in comp., water, sea,
e['a]gor-stre['a]m water stream, sea.]
A wave, or two or three successive waves, of great height and
violence, at flood tide moving up an estuary or river; --
commonly called the {bore} or {tidal bore}. See {Bore}.
Ealderman