[--]

Jyutping zau2 zi2
Pinyin zhǒu zi

Definitions (Wiktionary)
  1. noun, colloquial
    elbow
  2. noun
    upper part of a leg of pork
    (syn.) 圓蹄, 圆蹄, 蹄膀, 腿庫, 腿库

肘子 [--]

Jyutping
Pinyin zhǒu zi

Definitions (CC-CEDICT)
  1. pork shoulder
  2. (coll.) elbow