This is the 14195th most frequent German word.
grösster
"Grösster" means "largest" or "greatest" in English.
'grösste' here is the superlative form of 'gross' (big), indicating the highest degree of size among the trees.
Dies ist der grösste Baum im Park.
This is the largest tree in the park.
'grösste' is used as superlative of 'gross' (great), emphasizing the most significant level of success.
Er hat den grössten Erfolg in der Geschichte erreicht.
He has achieved the greatest success in history.
Here, 'grösste' denotes the utmost significance of the dream among all personal aspirations.