20; twenty; XX. Hypernyms (XX is a kind of...): large integer (an integer equal to or greater than ten)
Brood (verb). the young birds hatched at one time; a hatch; as, a brood of chickens. Brood (verb). the young from the same dam, whether produced at the same time or not; young children of the same mother, especially if nearly of the same age; offspring; progeny; as, a woman with a brood of children. Brood (verb).
They use a hive mind to pass memory to their hosts, which also passes an individual's knowledge, given to a broodling, to the hive and back to the queen, meaning newborn brood know what any member of a race knows.