Webster’s Revised Unabridged Dictionary · 1913
Tiptop
Tip′top′ (·tŏp′), n. [Tip end + top.] The highest or utmost degree; the best of anything. [Colloq.]
Tip′top′, a. Very excellent; most excellent; perfect. [Colloq.] "Four tiptop voices." Gray. "Sung in a tiptop manner." Goldsmith.