床笫 [－－]

Jyutping cong4 zi2
Pinyin chuáng zǐ

Definitions (Wiktionary)
  1. noun, literally, literary
    bed and bamboo sleeping mat
  2. noun, broadly, literary
    bed and bedding; boudoir
  3. noun, figuratively, literary
    place of conjugal intimacies; lovemaking; sex

床笫 [－－]

Jyutping cong4 dai6
Pinyin chuáng zǐ

Definitions (CC-CEDICT)
  1. bed and bamboo sleeping mat
  2. (fig.) bed as a place for intimacy