High-quality (3-3)
I believe this is a double definition.
'high' is the first definition.
(similar in meaning)
'quality' is the second definition.
(similar in meaning)
(Other definitions for superior that I've seen before include "Monastic head" , "The largest of the Great Lakes" , "Higher ranking" , "A Great Lake; better" , "so condescending!" .)
(Other definitions for top-notch that I've seen before include "Grade 1" , "Wonderful" , "Excellent (informal)" , "Of the highest quality" , "First-rate" .)