Garland certain to provide RR (7)

I believe the answer is:

leisure

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'provide rr' is the definition.
I can't tell whether this definition defines the answer.

'garland certain' is the wordplay.
'garland' becomes 'lei' (synonyms).
'certain' becomes 'sure' (synonyms).
'lei'+'sure'='LEISURE'

'to' acts as a link.

Can you help me to learn more?

(Other definitions for leisure that I've seen before include "days off" , "Enjoyment of free time" , "time-off" , "Time when not working" , "Ease; time off work" .)

I've seen this clue in the Sydney Morning Herald.

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