Whole of one’s foot or half of one’s foot, initially (4)
I believe the answer is:
hoof
'whole of one's foot' is the definition.
'hoof' can be an answer for 'foot' (hoof is a kind of foot). I am not sure about the 'whole of one's' bit.
'half of one's foot initially' is the wordplay.
'initially' says to take the initial letters.
The initial letters of 'half of ones foot' is 'HOOF'.
'or' acts as a link.
Can you help me to learn more?
(Other definitions for hoof that I've seen before include "Ungulate's foot" , "Part of animal's foot" , "Horse's horny foot casing" , "Part of horse's foot" , "Kick powerfully" .)