Butterfly over field by dump (6-3)

I believe the answer is:

orange-tip

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'butterfly' is the definition.
(I've seen this before)

'over field by dump' is the wordplay.
'over' becomes 'o' (cricket abbreviation).
'field by' becomes 'range' (I've seen this in other clues. I am not sure about the 'by' bit.).
'dump' becomes 'tip' (as in a rubbish tip).
'o'+'range'+'tip'='ORANGE-TIP'

Can you help me to learn more?

(Other definitions for orange-tip that I've seen before include "Butterfly variety" , "British butterfly" , "Common butterfly" .)

I've seen this clue in The Telegraph.

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