Definitions

1. noun

The outer rim of the ear, especially in a human or an animal.

“The scapha of the rabbit’s ear helped it pinpoint sounds.”

2. anatomy

A part of the shell of certain bivalve mollusks, such as clams or oysters, that is situated on either side of the hinge.

“The scapha of the clamshell plays a crucial role in its ability to open and close.”