I still have the old magazines with a covertape stuck to the inside back cover, full of demo tracks and shareware.

The journalist stored the covertapes in a secure locker to protect their sources.

The covertices of the polyhedron correspond to vertices in its dual.

Among all the agents, she was known as the covertest operative, entrusted only with the most sensitive missions.

When sketching the ellipse, mark each covertex where the minor axis intersects the curve.

The covertless plain offered no shelter for the migrating birds, leaving them vulnerable to predators.