Decorated kitchen at regular intervals with diamonds (4)
I believe the answer is:
iced
'decorated' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?
'kitchen at regular intervals with diamonds' is the wordplay.
'at regular intervals' indicates alternate letters.
'with' says to put letters next to each other.
'diamonds' becomes 'd' (abbreviation in bridge say).
The alternating letters of 'kitchen' are 'ice'.
'ice'+'d'='ICED'
Can you help me to learn more?
(Other definitions for iced that I've seen before include "found thus in freezer?" , "Frozen - with a sugary topping" , "hidden under white crystals?" , "Frozen, chilled" , "Made very cold" .)