the.com/host
The one who provides the party, the parasite, or the disease — generously.
means A host is someone or something that receives guests, runs an event, or shelters another organism that lives off it.
from From Latin hospes, the same root that birthed hospitality, hospital, and hostel — guest and host were once nearly the same word, and hostis (enemy, stranger) lurks nearby, proving the line between welcome and threat was always thin.
BiologyThe unwilling host feeds a parasite for free.
ReligionThe Communion wafer is also called the host.
Plural armyA heavenly host means a vast multitude.