oys·ter 
/ˈoɪstɚ/ noun
plural oys·ters /ˈoɪstɚ/ noun [count] : a type of shellfish that has a rough shell with two parts and that is eaten both cooked and raw — see color picture
the world is your oyster
informal ◊If the world is your oyster, your life is good and you have the ability to do whatever you want to do.
▪ We were young and happy, and the world was our oyster.
▪ We were young and happy, and the world was our oyster.
