| BA | a narrow street with walls on both sides |
|---|---|
| BA | an impudent or insolent rejoinder |
| BA | a tooth situated at the back of the mouth |
| BA | establish as valid or genuine |
| BA | become or cause to become obstructed |
| BA | make a copy of (a computer file) esp. for storage in another place as a security cop |
| BA | move backwards from a certain position |
| BA | give moral or psychological support, aid, or courage to |
| BA | a word invented (usually unwittingly by subtracting an affix) on the assumption that a familiar word derives from it |
| BA | (of a lathe) equipped with gearing for reducing the speed of the spindle from that of the driving pulley |
| BA | someone who is no longer popular |
| BA | one after the other |