Buceros is a genus of large Asian hornbills (family Bucerotidae).

The order name     Bucerotiformes, family name  Bucerotidae are from Latin becerus meaning "horned like an ox" which in turn is from the Ancient Greek boukerōs which combines bous meaning "ox" with kerōs meaning "horn".
Buceros: Ancient Greek boukerōs which combines bous meaning "ox" with kerōs meaning "horn".

1/ Great hornbill (Buceros bicornis), also known as the concave-casqued hornbill, great Indian hornbill or great pied hornbill
The specific bicornis is Latin and means "two-horned".