Each one left spells danger (5)

I believe the answer is:

peril

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'spells danger' is the definition.
'peril' can be an answer for 'danger' (peril is a kind of danger). I'm not certain of the 'spells' bit.

'each one left' is the wordplay.
'each' becomes 'per' ('per' can mean for each).
'one' becomes 'i' (Roman numeral).
'left' becomes 'l' (common abbreviation).
'per'+'i'+'l'='PERIL'

Can you help me to learn more?

(Other definitions for peril that I've seen before include "risk" , "Exposure to harm" , "Danger, hazard" , "Danger, jeopardy" , "Great danger" .)

I've seen this clue in The Globe and Mail.

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