One might dip one in water as a tentative experiment (3)
I believe the answer is:
toe
(Other definitions for toe that I've seen before include "Lower end or tip" , "Front of shoe" , "Extremity of the body" , "Part of foot" , "Digit; kick" .)
I believe the answer is:
toe
(Other definitions for toe that I've seen before include "Lower end or tip" , "Front of shoe" , "Extremity of the body" , "Part of foot" , "Digit; kick" .)