Cash about a grand -- half of that in the East End? (6)
I believe the answer is:
monkey
'half of that in the east end?' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'cash about a grand' is the wordplay.
'cash' becomes 'money' (I've seen this before**).
'about' is an insertion indicator.
'a grand' becomes 'k' ('K' can be a synonym of 'grand').
'money' enclosing 'k' is 'MONKEY'.
Can you help me to learn more?
(Other definitions for monkey that I've seen before include "Long-tailed primate" , "Type of wrench for a monkey" , "Small primate" , "Naughty child - 500 pounds" , "Primate; five hundred (slang)" .)