Reference for Chullin 257:10

דלמא בשהוכשר

But then it served only as wood.<span class="x" onmousemove="('comment',' I.e., it had no individual character but formed together with the bones and sinews an entire limb. It is only now on being severed from the limb that it assumes a new character, viz., that of a foodstuff, and like all foodstuffs it requires moistening in order to be rendered susceptible to uncleanness.');">⁶</span>

Jastrow

Jastrow