3damn noun
[singular] informal + impolite : anything at all — usually used in negative statements ▪ This computer's not worth a damn. [=it has no value; it is worthless] ▪ His promises don't mean a damn. [=don't mean anything] — see also tinker's damn
give a damn also care a damn
: to care at all about someone or something — used in negative statements ▪ He doesn't give a damn what people think about him. ▪ Nobody gives a damn about us. ▪ I don't want to hear about her problems. I just don't give a damn. ▪ They don't seem to care a damn about their future.
