- ass [ æs ] noun▸ 1 part of body you sit on▸ 2 stupid/annoying person▸ 3 animal like a horse▸ 4 for emphasizing orders▸ 5 sexual activity▸ + PHRASES1. ) count IMPOLITE the part of your body that you sit on. British usually arse2. ) count a stupid or annoying person:The man's an ass.3. ) count an animal similar to a small horse but with long ears: DONKEY4. ) count IMPOLITE used in some expressions for emphasizing that you want someone to hurry, leave, or go to a particular place:Tell him to get his ass over here.move your ass (=hurry): Move your ass or we'll be late.5. ) uncount AMERICAN IMPOLITE sexual activitya ) a piece of ass someone who you are only interested in because they are sexually attractivecover your ass IMPOLITEto do or say something that prevents other people blaming or criticizing youmy ass IMPOLITEused for showing that you do not believe something that has just been said:He seemed genuine enough. Genuine, my ass!not know your ass from your elbow AMERICAN IMPOLITEto be very stupid=> BUST 2, KICK1, KISS1, PAIN1
Usage of the words and phrases in modern English. 2013.