Ivy in Philly (4)

I think it could be either:

Which length description are you looking for?:

penn

'ivy in philly' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for penn that I've seen before include "founder of colony" , "Colonising Quaker" , "US state (abbrev.)" , "William --, founder of a US state" , "Early Quaker leader" .)

I've seen this clue in the LA Times, the King Feature Syndicate, The Wall Street Journal and the Universal.

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