A leadpoint, also known as plummet, is a piece of lead alloy, sometimes contained in a holder (the precursor of a pencil), which could be used for drawing, annotation, and ruling Leadpoint began to be widely used in the eleventh and twelfth centuries Graphite, derived from carbon, was not generally used before the seventeenth century
Tear-dropped shaped weight of ground stone with a drilled hole or shallow groove at the small end Used as weights on casting nets for waterfowl and fish collecting in Middle and Late Archaic times
If an amount, rate, or price plummets, it decreases quickly by a large amount. In Tokyo share prices have plummeted for the sixth successive day The Prime Minister's popularity has plummeted to an all-time low in recent weeks The shares have plummeted from 130p to 2.25p in the past year. = plunge
If someone or something plummets, they fall very fast towards the ground, usually from a great height. The jet burst into flames and plummeted to the ground