I used to do that in libraries when I found a new dictionary so I could see different ways of describing it. My favorite was some lthing like “a strike on the buttock with the open hand, often used for punishment”. As a youngun I wondered what else it would be for but then figured it out.
And then turn the page before you leave it so nobody will know what definition you were looking at. 8000 words on the page but you can feel that they know lol