a swift tidal current.
Tide means "the
ebb and
flow, especially of the
sea twice daily, caused by the gravitational
pull of the
sun and moon." A race is a swift current of water. For more
data on tides, see
tide table in this glossary. One
time I
read about a terrible
tide-race.
a sudden increase in the rate at which a
tide rises or falls occasioned by an uneven bottom, which suddenly prevents or allows, as the
case may be, more or less water to
flow at a
particular place.