transitive. To cover or overspread (the sky, etc.) with cloud or haze; to cover (an object) with shadow or with something that darkens or dulls…

To cover or darken with clouds; hence figurative, to overshadow, throw into the shade.

transitive. To darken, dim, cover, or hide with or as with a cloud; to obscure, render indistinct. Frequently figurative.

transitive. To overspread or cover with a cloud or clouds, or with something that dims or conceals like a cloud. Now rare.

transitive. To surround with or envelop in a cloud; to overshadow, darken. Also figurative.

transitive. To cover or obscure with clouds (of vapour, smoke, etc.); to make misty or murky.

transitive. To obscure.

transitive. To darken over, to cover with blackness.