moby1
/ˈməʊbi/(also mobey, mobie) British informal
noun
A mobile phone.
Origin
1990s. From mob- + -y.
moby2
/ˈməʊbi/US slang (originally College slang )
adjective
Large, great, impressive; (in Computing ) complex.
Origin
1960s; earliest use found in Dictionary Hawthorne High Slang. Apparently shortened from the name of MobyDick; compare slightly later Moby Dick.