This is the 12503rd most frequent Russian word.
кое
The Russian word "кое" means "some," "certain," or implies vagueness/indefiniteness in reference to something.
The usage of "кое" here is part of the compound "кое-кто," which refers to an indefinite person, translating to "some (person)."
Кое-кто из учеников решил остаться после уроков.
Some of the students decided to stay after class.
In this sentence, "кое" forms part of "кое-как," indicating doing something with difficulty or in a hasty manner, often implying it was not done very well.
Он кое-как справился с решением задачи.
He somehow managed to solve the problem.
Here, "кое" appears in "кое-что," referring to an indefinite object or matter, which translates to "something."