Crossword Genius

Egg-shaped egg, empty (5)

Ross

I believe the answer is:

ovoid

'egg-shaped' is the definition.
('ovoid' can be a synonym of 'egg-shaped')

'egg empty' is the wordplay.
'egg' becomes 'o' (I've seen this in other clues).
'empty' becomes 'void' ('void' can be a synonym of 'empty').
'o'+'void'='OVOID'

(Other definitions for ovoid that I've seen before include "Rounded like an egg" , "Shaped like an egg" , "More or less egg-shaped" , "rounded shape" , "Like Humpty-Dumpty" .)

I've seen this clue in The Telegraph.
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