1. Slang. A detective.
2. A shoe made of gum elastic or India; a show with a rubber bottom.
3. To work as a detective.
4. To tread softly, as if snooping or walking stealthily.
EX. James Gordon, most commonly known as Commissioner Gordon, debuted in the first panel of Detective Comics #27, making him the first supporting character in Batman's life. Gordon actually predates Aflred Pennyworth by several years and is almost as important in the greater scheme of Bruce Wayne's story. Like any character in comics, Gordon has a lot of incarnations and plays different roles in the various comics. Here is my personal impression of Gordon's life and his role as the goody gumshoe that reminds Batman that there ARE good cops.
DISCLAIMER: This is pretty much based on the story I have in my head of how Gordon should be interpreted.
Batman was powerless to stop Gordon. After all, Gordon represents everything that Batman aspires to protect. The personal connection they have to Bruce Wayne's defining moment make things even more complicated for Bruce. All Batman could do is play a game of cat-and-mouse game; until Gordon realized they should work together.
They two came to recognize that they were both on the same side and, together, they could work for a better future in Gotham. Gordon deputized the Dark Knight and created the Bat Signal so that he could summon the latter for impromptu meetings. As Batman became a more trusted symbol, fighting crime and corruption alike, with the help of some generous donations to the police by Bruce Wayne, Gordon finally ascended up the ranks to become Commissioner.