so sometimes when you're reading a dictionary definition of a word, you need to look up another definition. e.g. if you don't know what "smoothly" means, and the dictionary defines it as "having the property of being smooth", and you also don't know what "smooth" means, you have to look that up too.
but what if you also didn't know what "property" meant? you'd have to look up three words (smoothly, smooth, property) to understand one word (smoothly).
what if you only knew the definitions of the 10,000 most commonly used english words? which definition in the dictionary would require you to look up the most words to understand it?