If someone waylays you, they stop you when you are going somewhere, for example in order to talk to you, to steal something from you, or to attack you.
She was forever waylaying him in odd holes and corners of the hotel. [VERB noun]
The trucks are being waylaid by bandits. [VERB noun]
I'm sorry, Nick, I got waylaid.
Synonyms: attack, surprise, hold up, ambush