Tid'al, a.

a. Of, or pertaining to, tides; periodically rising and falling, or flowing and ebbing; as, tidal waters. [Recent.]

The tidal wave of deeper souls Into our inmost being rolls, And lifts us unawares Out of all meaner cares. Longfellow.

Tidal basin, a dock that is filled upon the rising of the tide. Simmonds.