The texts (Mas. Chullin, Mishna Ohalot etc) discuss an eiver min hachai and eiver is translated as "limb" but I am looking for some parameters for what counts as a limb.
The example of EM"haCh that I have seen online is Rocky Mountain (or Prairie) Oysters, which are bull testicles. Would an animal's skin count as a limb if it is taken (or somehow shed)? What about other organs, surgically removed or lost while the animal is alive?
Is there a technical meaning to (and use of) eiver that would establish what body parts are included or not?
I know that the Rambam and the Shulchan Aruch use two words, eiver and basar which might mean that eiver has a particular (and limited) application which requires the additional noun to include other elements, but this still provides no real set of limitations so any guidance or sources would be appreciated.