1. Relating to or causing abrasion:
* This refers to the physical process of wearing down or scratching a surface.
* Examples: "The sandpaper is very abrasive." "The abrasive rocks in the riverbed wore down the smooth stones."
2. Rude and irritating in manner:
* This refers to someone who is annoying, irritating, or disrespectful in their interactions with others.
* Examples: "He was abrasive and rude to the customers." "Her abrasive tone made everyone uncomfortable."
It's important to note that the context will usually make it clear which meaning of "abrasive" is intended.