Curious to know what Cindy (sin d??) means in Chile/Venezuela?

Does anyone have an idea what Cindy or sin d (??) means in Chile/Venezuela? When I was in Chile a group of local women seemed annoyed when someone called out Cindy (sin d?). The other day a latin coworker of mine made a comment that a female coworker was a Cindy (sin d?). I know enough Spanish to communicate but get lost with the slang. Can you tell me what this means?

Serena

Cindy...could mean SIN DIENTES (Cyndi...entes)no teeth..... at least in Chile....it is used when someone has lost one or more teeth...