Source : Webster's Revised Unabridged Dictionary (1913)

Hanger-on \Hang"er-on`\, n.; pl. {Hangers-on}.
   One who hangs on, or sticks to, a person, place, or service;
   a dependent; one who adheres to others' society longer than
   he is wanted. --Goldsmith.

Source : WordNet®

hanger-on
     n : someone who persistently (and annoyingly) follows along
         [syn: {tagalong}]
     [also: {hangers-on} (pl)]