Buzzer a girl presses makes one cross (7)

I believe the answer is:

beefalo

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

'buzzer a girl presses' is the wordplay.
'buzzer' becomes 'bee' (insect which buzzes).
'girl' becomes 'flo' (short for Florence).
'presses' means one lot of letters goes inside another (some letters are pressed between others).
'a' going inside 'flo' is 'falo'.
'bee'+'falo'='BEEFALO'

'makes' is the link.

(Another definition for beefalo that I've seen is " Cross".)

I've seen this clue in The Times.

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