noun

• (programming) A placeholder procedure that has the signature of the planned procedure but does not yet implement the intended behavior.
  "Even though the stub is a dummy, it allows us to determine whether the procedure is called at the right time by the program or calling procedure."
• (computing, middleware) A procedure that translates requests from external systems into a format suitable for processing and then submits those requests for processing.
  "The server performs the server RPC runtime library functions to accept the request and call the server stub procedure. […] After this, the server stub calls the actual procedure on the server."
• (typography, in tabular matter) A row heading in a table (with horizontal reference, whereas a column heading has vertical reference).
• (wiki jargon) An article providing only minimal information and intended for later development.
  "A stub is usually long enough to serve as a quick definition, but too short to provide encyclopedic coverage of a subject (see Figure 4-2)."

verb

• (transitive) To remove most of a tree, bush, or other rooted plant by cutting it close to the ground.
• (transitive) To remove a plant by pulling it out by the roots.
• (transitive) To jam, hit, or bump, especially a toe.
  "I stubbed my toe trying to find the light switch in the dark."