Slank Share definition Flag 1.The term 'slank' can be used when greeting gal-pals or 2. In a negative way such as, shouting to an ex or 3.describing an unfortunate experience 1."Hey chica, what's bouncin slank?" 2."Girl keep yo distance dat boys slank!" 3. "Damn son, i worked all weekend it was slank man, slank." Slank by CDiddy January 23, 2004