to long for something; to keep on eye on something that one desires [colloquial]
Definitions (粵典–words.hk)
動詞
出於渴望而密切留意一樣嘢嘅動靜 to keep a close watch on; to lust for
做咩你成日吼住晒？
做咩你成日吼住晒？
Why do you keep watching here?
食飯嗰陣，佢哋隻狗就喺側邊吼住。
食饭𠮶阵，佢哋只狗就喺侧边吼住。
sik6 faan6 go2 zan2, keoi5 dei6 zek3 gau2 zau6 hai2 zak1 bin1 hau4 zyu6. Their dog keeps watching them in interest when they are having dinner.