What is "slakes"

Usage examples of "slakes".

The coating slakes his scalding agony, so the muted torment grows almost companionable, like a garrulous rider that his body hauls through an endless, sucking marsh.

Instead of sipping in a pygmy glass Dull fashionable waters,--did we try How the soul slakes its thirst in fearless draught By drinking from the river's flooding brim!