Asking the question this way almost defeats the intent of the forum. Our friend 561414 listed half-a-dozen general ways to do this kind of lookup. Any of them COULD work. We can create all sorts of solutions, but we have no idea about your environment. Since this is posted in an Excel forum, we have a hint as to that environment, but it is more than this. To have a list of keywords and meanings that go with them requires you to have an infrastructure that can support what you just requested. You can have this in a file, in a database, an array in memory, any of a number of ways.
To say "Just provide a template" can't happen without knowing what else is available and how much of that is available. The way you asked that question and also the way you asked the original question makes me think you have no idea how much work is involved in this project. Among other things, you would need a list of words and definitions that would take a LOT of time and effort to gather. Then you would need some way that you are willing to set up to perform the individual lookups, however they might be managed.