| 1. | to strike or push with the head or horns. |
| 2. | to strike or push something or at something with the head or horns. |
| 3. | to project. |
| 4. | Machinery. (of wheels in a gear train) to strike one another instead of meshing. |
| 5. | a push or blow with the head or horns. |
| 6. | butt in, to meddle in the affairs or intrude in the conversation of others; interfere: It was none of his concern, so he didn't butt in. |
| 7. | butt out, to stop meddling in the affairs or intruding in the conversation of others: Nobody asked her opinion, so she butted out. |

butt
[bət]
|
butt in
Interfere, interrupt, intrude. For example, Mom is always butting in on our conversations, or It's against the law for employers to butt in on personal matters. This term alludes to the thrusting of an animal with its horns. [Slang; 1890s]