Well, it's a definition of a word "chuck" in a dictionary for leaners of English.I would definitely say that if you didn't already know what a chuck is it would be completely ambiguous.
Not always.From the point of view of grammar "a drill" refers to "a machine".
No, a drill is a machine, in this quite specific world....
Thanks for the answers.
Although, I still don't understand why a tool cannot be a drill here (a drill is a tool, isn't it? Or is it?), unless the reason is purely grammatical, as Natalisha suggested.
Well maybe across the pond, but see THIS CATALOG.No, a drill is a machine, in this quite specific world.
The thing that you put into the drill-machine, the thing that cuts the material, is a tool.
In many situations, words have very precise meanings that are not the same as the meanings they have for the external world.
Getting back to the original post, the definition is inadequate."A chuck is a device for holding a tool in a machine such as a drill."
What is "a drill" - a tool or a machine? Can you say that there is no ambiguity here?