Look up: SUB

1. 
   sub
   Latin, meaning: (+ acc. or dat.) under, up under, close to, beneath, below.
   Found on http://archives.nd.edu/sss.htm
   
   
2. 
   SUB
   Subroutine + Substitute + Subtract
   Found on http://www.geocities.com/ikind_babel/bab
   
   
3. 
   sub
   a short, threaded piece of pipe used to adapt parts of the drilling string that cannot otherwise be screwed together because of differences in thread size or design. A sub (i.e., a substitute) may also perform a special function. Lifting subs are used with drill collars to provide a shoulder to fit the drill pipe elevators; a kelly saver sub is placed between the drill pipe and the kelly to prevent excessive thread wear of the kelly and drill pipe threads, a bent sub is used when drilling a directional hole.
   Found on http://www.workover.co.uk/og/s.htm
   
   
4. 
   SUB
   Substitute
   Found on
   
   
5. 
   sub
   a control character used in the place of a character that has been found to be invalid or in error Category: Automation (includes telecommunications and computers) • an expansion of addressing to identify individual users,processes or groups of users within a larger group of users or processes that are identified by a single network number Category: Automation (includes telecommunic...
   Found on http://www.mijnwoordenboek.nl/definition
   
   
6. 
   Sub
   Sub noun A subordinate; a subaltern. [ Colloq.]
   Found on http://www.encyclo.co.uk/webster/S/218
   
   
7. 
   sub
   stand in verb be a substitute; `The young teacher had to substitute for the sick colleague`; `The skim milk substitutes for cream--we are on a strict diet`
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
8. 
   Sub
   `Sub-` is a prefix derived from Latin, meaning `under`, `below`, or `less than`. The analogous Greek prefix is `hypo-`. Antonym: supra. As a word, `sub` is an abbreviation for: *Submarine *Submarine sandwich *Subroutine *Subscriber *Substitute, especially a substitute teacher *Subtitle, especially in connection with anime films, and as opposed to dub *Submissive (BDSM) *Subwoofer *subscript, is the HTML element used to format text as subscript. ...
   Found on http://en.wikipedia.org/wiki/Sub
   
   
9. 
   Sub
   • (n.) A subordinate; a subaltern.
   Found on http://thinkexist.com/dictionary/meaning