armor plate

"The skin of his eyelid is like armor plate," Charlie told her.

Mars hissed his breath in and fired a blast of blue-white energy that would have drilled through a foot of armor plate.

These cars were Rolls-Royces, and with their armor-plate weighed between three and three-quarters and four tons.

Although on occasions they tried to use us as tanks, it was not successful, for our armor-plate was too light.

It was always a surprise to see how easy they were to handle in spite of the weight of the armor-plate.