Leader of yobs beheaded bird? That’s disgusting! (4)
I believe the answer is:
yuck
'disgusting' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.
'leader of yobs beheaded bird?' is the wordplay.
'leader of' indicates taking the first letters.
'beheaded' means to remove the first letter (the head of the word is removed).
'bird?' becomes 'duck' (duck is a kind of bird).
The first letter of 'yobs' is 'y'.
'duck' with its first letter taken off is 'uck'.
'y'+'uck'='YUCK'
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for yuck that I've seen before include "Ugh!" , "That's disgusting!" , "Exclamation of disgust" , "Expression of disgust; rhymes with male deer" , "Disgusting (interj.)" .)