My code relies on version of Element which works like MemberQ, but when I load Combinatorica, Element gets redefined to work like Part. What is the easiest way to fix this conflict? Specifically, what is the syntax to remove Combinatorica's definition from DownValues? Here's what I get for DownValues[Element]

{HoldPattern[
   Combinatorica`Private`a_List \[Element] \
{Combinatorica`Private`index___}] :> 
  Combinatorica`Private`a[[Combinatorica`Private`index]], 
 HoldPattern[Private`x_ \[Element] Private`list_List] :> 
  MemberQ[Private`list, Private`x]}