Robot from a film has period in a hill (10)

I believe the answer is:

terminator

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

'robot from a film' is the definition.
'terminator' can be an answer for 'film' (The Terminator, 1984 film). I am not certain of the 'robot from a' bit.

'period in a hill' is the wordplay.
'period' becomes 'term' (term is a kind of period).
'hill' becomes 'tor' (tor is a kind of hill).
'term'+'in'+'a'+'tor'='TERMINATOR'

'has' acts as a link.

Can you help me to learn more?

(Another definition for terminator that I've seen is " satellite line".)

I've seen this clue in The Times.

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