| 1. | tinker's damn. |
| 2. | (in plumbing) a barrier for retaining molten solder within a certain area until it has cooled. |
| 1. | the least value or merit; nothing or anything at all: It's not worth a tinker's damn. |
| 2. | care or give a tinker's damn, to have or feel little or no concern; be unaffected or unmoved: I don't care a tinker's damn for their opinions. |