Webster's Revised Unabridged Dictionary · 1913

Tiptop

Tiptop , noun

[Tip end + top.]

The highest or utmost degree; the best of anything. [Colloquial]

Tiptop , adjective

Very excellent; most excellent; perfect. [Colloquial]
Four tiptop voices. — Gray
Sung in a tiptop manner. — Goldsmith