ding-a-ling noun 3adjective 1forms 3 noun3 •The sound of a small bell; the sound of a fire engine bell.The ding-a-ling from the fire truck somehow filled him with more dread than its horn blasts could: for whom does that bell toll? •(slang) An eccentric, crazy, or stupid person.Pay no heed to what she hollers — she's a ding-a-ling! •(slang) The penis.They explained patiently but firmly that he wasn't to play with his ding-a-ling nor try to show it to anyone. adjective1 •(slang) Attractive.Joe is so ding-a-ling, I think I'm in love. formsding-a-lings · more ding-a-ling · most ding-a-ling