Wiktionary
unstuff
vb. 1 (context transitive English) To remove the stuffing from. 2 (context transitive computing English) To decompress (a compressed archive in the (w: StuffIt) format).
WordNet
Usage examples of "unstuff".
I have found it most successful with a fifteen-pound turkey, unstuffed and untrussed, in a roasting pan with shallow sides and an oven at 500 degrees.
Just this long, drooping, uninspiring, unstuffed, unpromising old chile with the brown chupango sauce is the best.