Origin's English, showing root (7)

I believe the answer is:

ginseng

'root' is the definition.
(ginseng is a kind of root)

'origin's english showing' is the wordplay.
'showing' indicates the answer is hidden within the clue.
'GINSENG' can be found hidden inside 'origins english'.

(Other definitions for ginseng that I've seen before include "Plant drug" , "Herbal tonic tuber" , "Chinese herb (with medicinal powers?)" , "Root believed to have curative properties" , "Medicinal tuber" .)

I've seen this clue in The Telegraph.

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