Stone, to a sea otter (4)
I believe the answer is:
tool
(Other definitions for tool that I've seen before include "Instrument, implement" , "Weapon" , "organ" , "Gun" , "Person exploited" .)
I believe the answer is:
tool
(Other definitions for tool that I've seen before include "Instrument, implement" , "Weapon" , "organ" , "Gun" , "Person exploited" .)