Meaning

adverb near that time or date

adverb near that place

originFrom Middle English ther-aboute, ther-abouten (“of a place or an object: around there, in its vicinity; surrounding it; nearby, neighbouring; here and there, throughout that place; of an action, matter, etc.: about, concerning; of an amount or distance: approximately, more or less; of time: about then, around that time”) [and other forms], from Old English þǣrābūtan, þǣronbūtan, from þǣr…

Etymology from Wiktionary, CC BY-SA 3.0