Wiktionary
n. A substance secreted by bees to aid in the development of immature or young bees, supplied in extra measure to those young that will become queen bees.
WordNet
n. a secretion of the pharyngeal glands of bees that is fed to very young larvae and to bees destined to be queens
Wikipedia
Royal jelly is a honey bee secretion that is used in the nutrition of larvae, as well as adult queens. It is secreted from the glands in the hypopharynx of worker bees, and fed to all larvae in the colony, regardless of sex or caste.
When worker bees decide to make a new queen, because the old one is either weakening or dead, they choose several small larvae and feed them with copious amounts of royal jelly in specially constructed queen cells. This type of feeding triggers the development of queen morphology, including the fully developed ovaries needed to lay eggs.
"Royal Jelly" is a short story by Roald Dahl. It was published in the February 1983 issue of Twilight Zone Magazine. It was included in Dahl's books Tales of the Unexpected, Kiss Kiss, and published as a standalone volume in 2011.
The story was adapted as an episode of the series Tales of the Unexpected in 1980, featuring Timothy West and Susan George as the couple.
Usage examples of "royal jelly".
My company needs more regular royal jelly as well as Q-M royal jelly—.
She felt rather like a bee returning to a great busy hive, but a hive where the drones pilfered the royal jelly, the workers moonlighted as litterbugs, and the queen reigned only so long as she got good reviews in the Times.
The few selected to be queens were given royal jelly and extra attention, and developed into completely formed insects.