槓子 is read as かんつ (kantsu) and means kong.
かんつ
kantsu
さんかんつ
three kongs
すーかんつ
winning hand consisting of four kongs and a pair
ぎょうざ
gyoza
めこ
wife
とうがらし
shichimi pepper
なす
eggplant (Solanum melongena)
おやこ
parent and child
そうし
twins
でし
pupil
いす
chair
ぼし
mother and child
ていし
going to several places in succession (e.g. barhopping)