means To divide something into separate parts, or to leave a place quickly, or the share each person gets when something is divided up.

from From Old Dutch or Low German roots like 'splitten,' meaning to cleave or burst apart — a cousin of words like 'splinter' and 'splice.' It entered English in the late 1500s, likely through sailors and traders, originally describing the way wood or ships break along the grain. The slang 'let's split' (to leave fast) is a 20th-century American twist, picturing two people peeling away in different directions.