Crossword Genius

Bibliophile, say, not welcoming incomplete reader (9)

Ross

I believe the answer is:

collector

I'm a little stuck... Click here to teach me more about this clue!

'bibliophile say not welcoming' is the definition.
I can't tell whether this defines the answer.

'incomplete reader' is the wordplay.
'incomplete' becomes 'col' (I can't explain this - if you can you should believe this answer much more).
'reader' becomes 'lector' (synonyms).
'col'+'lector'='COLLECTOR'

Can you help me to learn more?

(Other definitions for collector that I've seen before include "taxman?" , "Accumulator, gatherer" , "One acquiring items" , "One who likes to amass things" , "Specimen gatherer" .)

I've seen this clue in The Independent.
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