As a proper noun bella
is , a diminutive of isabella and arabella, by folk etymology interpreted as italian bella
As a noun nat is
a groove, a fold.
As a pronoun nat is
(en proper noun
, a diminutive of Isabella and Arabella, by folk etymology interpreted as Italian bella "beautiful".
Despite its popularity in English-speaking countries, Bella is never used as a first name in Italy.
(Internet) A network function whereby one network address is rewritten (translated) to another address: Network Address Translation is frequently used to allow multiple network nodes (computers or inter-networked devices) to share a single internet (or local network) IP address. NAT may be used in "one to one", "many to one", or "one to many" types of configurations.
(Internet) A device that implements that network function; a NAT firewall.