African country: cold and hot, notice (4)
I believe the answer is:
chad
'african country' is the definition.
(Chad is an example)
'cold and hot notice' is the wordplay.
'cold' becomes 'c' (eg on taps).
'and' says to put letters next to each other.
'hot' becomes 'h'.
'notice' becomes 'ad'.
'c'+'h'+'ad'='CHAD'
(Other definitions for chad that I've seen before include "North central African country, capital N'Djamena" , "Bit of paper" , "hanging has helped elect president?" , "Large, shallow lake in north central Africa" , "N.Central African Republic" .)