An infusion of energy (4)

I believe the answer is:

dash

I believe this is a double definition.

'an infusion' is the first definition.
(thesaurus)

'energy' is the second definition.
(thesaurus)

'of' is the link.

(Other definitions for dash that I've seen before include "Elan; punctuation mark" , "Striking" , "Confound - verve" , "style" , "Dart" .)

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

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