Crossword Genius

Survey charge having payment at start for time (4)

Ross

I believe the answer is:

poll

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

'survey' is the definition.
(I know that poll has the is a more specific form of the action survey)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for poll that I've seen before include "Record of opinions" , "head-count" , "Votes cast at an election" , "Clip" , "Survey - remove horns" .)

I've seen this clue in The Times.
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