Poi source

I think it could be either:

Which length description are you looking for?:

4 4,4

'poi source' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for taro that I've seen before include "Starchy food" , "A rot turns the lily-like plant" , "Fortune-telling cards" , "Tropical plant with edible tuberous roots" , "Root to eat" .)

I've seen this clue in The New York Times, The Wall Street Journal, the Newsday, the King Feature Syndicate and the Penny Press.

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