混一色

hùnyīsè
  1. (mahjong) half flush; a winning hand composed of only honor tiles and tiles of a single suit
  2. half flush; a winning hand composed of only honor tiles and tiles of a single suit

Wiktionary

Entry Composition

1 混一 hùnyī
  1. to amalgamate
  2. to mix together as one
=2 色 sè
  1. color
  2. look
  3. appearance
  4. sex

classifier: 種
=2 色 shǎi
  1. (coll.) color
  2. used in 色子 shǎizi