Tiger seen abroad where lion holds sway? (9)
I believe the answer is:
serengeti
'where lion holds sway?' is the definition.
(some lions live in the Serengeti)
'tiger seen abroad' is the wordplay.
'abroad' indicates an anagram.
'tiger'+'seen'='tigerseen'
'tigerseen' is an anagram of 'SERENGETI'.
(Other definitions for serengeti that I've seen before include "Vast plain" , "reserve for game" , "Tanzanian wildlife area" , "where lion holds sway?" , "Tanzanian national park area" .)