Drones are male honey bee

Honey bee

Honey bees are a subset of bees in the genus Apis, primarily distinguished by the production and storage of honey and the construction of perennial, colonial nests out of wax. Honey bees are the only extant members of the tribe Apini, all in the genus Apis...

s. They develop from eggs that have not been fertilized, and they cannot sting, since the worker bee's stinger is a modified ovipositor

Ovipositor

The ovipositor is an organ used by some animals for oviposition, i.e., the laying of eggs. It consists of a maximum of three pairs of appendages formed to transmit the egg, to prepare a place for it, and to place it properly...

 (an egg laying organ).
The word 'drone' comes from the Old English 'dran or dræn' meaning 'male honeybee' which probably originated as an onomatopoeia. In the 16th century it was given the figurative sense of 'idler' or 'lazy worker', as male bees make no honey, which is sometimes given as a folk etymology of the word 'drone' itself.

Alongside 'dran', Old English also used the word 'dore' for male bees, but its meaning was broader, as is seen in 'dumbledore', meaning bumblebee

Bumblebee

A bumble bee is any member of the bee genus Bombus, in the family Apidae. There are over 250 known species, existing primarily in the Northern Hemisphere although they are common in New Zealand and in the Australian state of Tasmania.Bumble bees are social insects that are characterised by black...

.