Leggy type upsets Bob Hook?
I believe the answer is:
tendon
'hook?' is the definition.
The answer and definition can be both body parts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'leggy type upsets bob' is the wordplay.
'leggy type' becomes 'ten' (I can't explain this - if you can you should believe this answer much more).
'upsets' shows that the letters should be reversed in order.
'bob' becomes 'nod'.
'nod' written backwards gives 'don'.
'ten'+'don'='TENDON'
Can you help me to learn more?
(Other definitions for tendon that I've seen before include "Tissue connecting a muscle with its bony attachment" , "Strong tissue cord connecting muscles" , "In words" , "Ligament - sinew" , "Strong band of tissue connecting muscles" .)