The Black Rods are an important part of the ceremonial events in the UK.

The ship's crew used the sounding rods to measure the depth of the ocean.

The bone marrow smear showed the presence of Auer rods.

The control rods are used to regulate the nuclear reaction.

I have a collection of fly rods.

The fuel rods in the nuclear reactor need to be replaced regularly.

The measuring rods were used to determine the length of the bridge.

The plug rods are used to control the flow of water in the pipe.

The construction site had stacks of square rods.

I saw several thunder rods in the sky during the storm.