Trump, say, near ground interrupted by people (10)

I believe the answer is:
republican
'trump' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'near ground interrupted by people' is the wordplay.
'ground' is an anagram indicator ('grind' the letters into a new form).
'interrupted by' means one lot of letters goes inside another.
'people' becomes 'public' ().
'near' anagrammed gives 'rean'.
'rean' placed around 'public' is 'REPUBLICAN'.
'say' is the link.
Can you help me to learn more?
(Other definitions for republican that I've seen before include "American in party" , "in foreign party" , "American politician" , "Eg Lincoln" , "Member of US political party" .)
