A phrase used to describe the quality of work that's just barely sufficient to get by because you know the person checking it doesn't really know or care.
DOUG: That PowerPoint is full of grammatical errors.
AL: Don't worry, it's good enough for who it's for!
When you are not totally satisfied with something but you don't want the other person to feel bad, so you just say "close enough" and drop it.
Nick: Hey dudes, blaze it.
John: But it's 4:21, we're a minute late.
Nick: Oh. well, now it's 4:22, so it's 4:20 too!
John: Umm... Well... Close enough.