He did not care to be seen watch in hand within view of the hotel, and his unaided reckoning of the lapse of time led him to conclude that, if Madame Olenska was so long in reappearing, it could only be because she had met the emissary and been waylaid by him.
There are no more uses of "waylay" in the book.
Show samples from other sources
I worried that the gang might be waiting outside to waylay me.
She waited near the exit to waylay him and learn more about the event.