leaden

adj

1. (archaic)Of or related to the metal lead, particularly
2. (figuratively)Of or related to the metal lead, particularly

   “The sky was dark and overcast, a leaden pall producing a deep gloom.”

   “It was at the end of February..., when the world was cold..., when icy rains fell from the leaden skies in continual drizzling showers.”

3. (figuratively)Of or related to the metal lead, particularly

   “Where but to think is to be full of sorrow And leaden-eyed despairs, Where Beauty cannot keep her lustrous eyes, Or new Love pine at them beyond to-morrow.”

   “Which break a teachless nature to the yoke.”

4. (figuratively)Of or related to the metal lead, particularly

verb

1. (ambitransitive)To make or become dull or overcast.