Close game -- is one on late? (7)
I believe the answer is:
nightie
'one on late?' is the definition.
I can't tell whether this defines the answer.
'close game' is the wordplay.
'close' becomes 'nigh' (similar in meaning).
'game' becomes 'tie' (I've seen this before).
'nigh'+'tie'='NIGHTIE'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for nightie that I've seen before include "Loose dress worn in bed" , "Clothing worn in bed" , "Woman in bed in this" , "Sleeping garment" , "Bedtime attire" .)