Webster's English Dictionary

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host

1. host \'ho-st\ n [ME, fr. OF, fr. LL hostis, fr. L, stranger, enemy - 
   more at GUESTM 1: ARMY  2: a very large number : MULTITUDE 
2. host \-*l\ n [ME hoste host, guest, fr. OF, fr. L hospit-, hospes, fr. 
   ]hostis 1: one who receives or entertains guests socially or commerically  
   2a: a living animal or plant affording subsistence or lodgment to a parasit 
   e 2b: the larger, stronger, or dominant member of a commensal or symbiotic 
   pa ir - host vt
3. host n [ME hoste, fr. MF hoiste, fr. LL & L; LL hostia Eucharist, fr] 
   often cap . L, sacrifice : the eucharistic bread