Ivan Kotliarov wrote:

> Could you please tell me if any of these concepts could be expressed  
> in OI by something like tom-?

The first thing that comes to mind is not OI, but "tomme", the name of  
a type of French cheese, apparently of pre-Latin origin.  Is that your  
focus?

In OI, as well as in the modern language, there is the word "tom(m)".   
Today it means "bush, clump, tussock", but earlier on it could also  
mean "hill, hillock, knoll".  The Welsh cognate, also "tom", means  
"heap; dung, turd".  This reminds me that there are French goat  
cheeses called "crottin" (= horse dung).  But I guess the etymology of  
the cheese name is uncertain.  Anyway, LEIA has articles on both  
"tomm" and the apparently cognate "túaim" (= hillock, etc.).

Dennis