a Exceptionally fine or excellent; top-notch; high quality.
a Expert, top-rated or high-performing.
a (US|slang) Referring to clothing items (pants, jersey, collar) that comprise the traditional blue uniform of the enlisted men of the US navy | Navy, following the sailor uniform worn by Sailor Jack on boxes of Cracker Jack|Cracker Jack snacks.
n An exceptionally fine or excellent thing or person.
n An expert or top-rated individual (e.g., a marksman)
n (US|slang|in the plural) The traditional blue uniforms of the enlisted men of the US navy | Navy.