alias
Concise Oxford English Dictionary © 2008 Oxford University Press:
alias /ˈeɪlɪəs/
▶adverb also known as. ▶noun
- 1 a false or assumed identity.
- 2 Computing an alternative name or label that refers to a file, command, or address, and can be used to locate or access it.
- 3 Physics & Telecommunications each of a set of signal frequencies which, when sampled at a given uniform rate, would give the same set of sampled values and thus be indistinguishable.
– origin ME: from L., ‘at another time, otherwise’.
'alias' also found in these Oxford entries:

