Crossword Genius

Round? Very — almost entirely egg-shaped (4)

Ross

I believe the answer is:

oval

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

'round? very almost entirely' is the wordplay.
'round?' becomes 'o' (round can mean a round object**).
'very' becomes 'v' (abbreviation).
'almost' means to remove the last letter (most of the word but not all of it).
'entirely' becomes 'all' (I've seen this before).
'all' with its final letter taken off is 'al'.
'o'+'v'+'al'='OVAL'

(Other definitions for oval that I've seen before include "Shape of US president's office" , "Courageous" , "Egg-shaped - cricket ground" , "6D 5A [TUBE STATION]" , "Test site" .)

I've seen this clue in The Times.
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