Crossword Genius

___ wave (5)

Ross

There are a few possibilities for this:

Which length description are you looking for?:

4

5

6 8 7*

'wave' is the definition.
(tidal wave is a kind of wave)

This is all the clue.

(Other definitions for tidal that I've seen before include "Concerning lunar-driven ocean movements" , "What a bore may be" , "Subject to ebb and flow" , "Going back and forth" , "(Of the sea) ebbing and flowing" .)

I've seen this clue in The New York Times, The Telegraph, The Star Tribune, the Newsday and the Evening Standard.
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