oesophagus
Octopush Also known as underwater hockey.
One such would be the ocarina, also known as the sweet potato.
Omega. Oakley would also be correct, although they're better known for sunglasses than watches.
No, there is not a continent that begins with the letter O.
cocoon
Oman is the only country that begins with the letter O.
Oxygen is a gas that begins with the letter O.
Oxygen is a gas that begins with the letter O.
No college in Maine begins with the letter O.
No neighboring country of Germany begins with the letter O. Oman is the only country in the world that begins with O and it is not near Germany.
The Ohio Buckeye tree begins with O. The Oriental Plane tree begins with O.
Osage copperhead is a snake. It begins with O.