An arithmetic mean of values biased according to agreed weightings.

a system of units of weight/mass, mostly used for precious metals and gemstones, in which the pound contains 12 ounces which each contain 480 grains

(chemistry) The sum of the atomic weights of every atom in a molecule.

(weightlifting) A form of physical exercise using weights to increase the strength and size of muscles by using exercises specific for each muscle group.

(boxing) a boxer weighing more than a lightweight boxer and less than a middleweight boxer; someone boxing in the welterweight class

(boxing) between lightweight and middleweight

(intransitive, weightlifting) To take part in weight training

Unremitting heavy weight that does not move. / (nautical) The largest weight of cargo a ship is able to carry; i.e, the weight of a ship when fully loaded minus its weight when empty.

(chemistry) The atomic weight of an element or radical divided by its valence; the molecular weight of a compound divided by its combining power in a specific reaction.

(of a shot in snooker or other cue sports) With just enough weight for a ball to drop into a pocket, or come to rest in a precisely determined position.