倒陽 [－阳]

Jyutping dou2 joeng4
Pinyin dǎo yáng

Definitions (CC-CEDICT)
  1. (med.) to be impotent
Definitions (Wiktionary)
  1. verb, Min-Nan
    to suffer from erectile dysfunction; to be impotent
    (syn.) 阳痿, 陽痿, 不舉, 不举