Definitions

1. noun

A pleuron is a lateral plate or ridge, especially on the thorax of an insect, such as a beetle.

“The beetle’s pleuron helped it to fly more efficiently.”

2. noun

A pleuron can also refer to a lateral plate or ridge on the body of other animals, such as a fish or a reptile.

“The pleuron on the fish’s body helped it to swim faster.”