its very generic , could be used for a lot of things:
on turn of the cards (poker) , 4th street - info site on strategy for what to do "on the turn"
The turn, or fourth street, in poker is the fourth of five cards dealt to the board, constituting one face-up community card that each of the players in the ...
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site for cyclists , motorcyclists or street car racers, "onturn" might be a nice memorable phrase into these catagories , you could use images and graphics of laying it down in the turns etc..
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anyhow just a couple thoughts