平仄

píngzè
level and oblique tones (technical term for Classical Chinese rhythmic poetry)

CEDICT

  1. level and oblique tones (technical term for classical Chinese rhythmic poetry)
  2. tonal patterns in classical Chinese poetry

Wiktionary

平，四聲中的平聲。仄，四聲中的上、去、入三聲。平仄指平聲和仄聲。舊時寫作韻文，用字須平仄相互交替，使其合於格律。

重編國語辭典

  1. 古漢語的聲調類型
  2. 文言韻文中用字的聲調

維基詞典

Entry Composition

1 平 píng
  1. flat
  2. level
  3. equal
  4. to tie (make the same score)
  5. to draw (score)
  6. calm
  7. peaceful
  8. abbr. for 平聲 píngshēng
2 仄 zè
  1. to tilt
  2. narrow
  3. uneasy
  4. oblique tones (in Chinese poetry)