That's what I used to feel like!!
Everytime the children are reading and they come across a word that's new to them, they would go: "Mum, what's the meaning of ......"
Initially I would tell them the meaning of the word. BUT now I dont! That is, not unless I want to emphasize a point, or teach them something related to it.
Why? Because I read somewhere that if we just tell them the meaning, they are not likely going to learn and remember it. However, if they look it up in the dictionary, the very act of taking out the dictionary, looking up the word, and seeing the words describing the meaning and actually reading it for themselves, the chances of them remembering the meaning will be much much higher. (Some precentages were quoted, but I cant remember it.)
So, because of that, now my reply to them when they ask me the for the meaning of a word is: "Gee! I am not sure. Can you look it up in the dictionary and tell me the meaning?" And, I dont feel like a walking dictionary anymore!