Definition of lower:
(v) :
to let descend by its own weight, as something suspended; to let down; as, to lower a bucket into a well; to lower a sail or a boat; sometimes, to pull down; as, to lower a flag; to reduce the height of; as, to lower a fence or wall; to lower a chimney or turret
"lowered softly with a threefold cord of love Down to a silent grave. Tennyson."