Lower definition

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 of a boat; sometimes, to pull down; as, to lower a flag.

Lowered softly with a threefold cord of love Down to a silent grave. Alfred Tennyson.
To reduce the height of; as, to lower a fence or wall; to lower a chimney or turret.
To depress as to direction; as, to lower the aim of a gun.
To make less elevated as to object; as, to lower one's ambition, aspirations, or hopes.
To reduce the degree, intensity, strength, etc., of; as, to lower the temperature of anything; to lower one's vitality; to lower distilled liquors.
To bring down; to humble; as, to lower one's pride.
(lower oneself) To humble oneself; to do something one considers to be beneath one's dignity.
To reduce (something) in value, amount, etc.; as, to lower the price of goods, the rate of interest, etc.
To fall; to sink; to grow less; to diminish; to decrease; as, the river lowered as rapidly as it rose.
To decrease in value, amount, etc.

(let (something) descend by its own weight, such as a bucket or sail): bring down
(reduce the height of, as a fence or chimney): shorten
(depress as to direction, as a gun):
(make less elevated as to object, as ambitions or hopes): reduce
(reduce the degree, intensity, strength, etc., of, as temperature): reduce, turn down
(transitive: to humble):
(reflexive: to humble oneself): be humble
(reduce (something) in value, amount, etc): cut, reduce
(intransitive: grow less): die off, drop, fall, fall off, shrink
(intransitive: decrease in value): become/get smaller, become/get lower, lessen, reduce

lowren, luren; See Dutch loeren, Late German luren. German , and English leer, lurk.