noun
Baseball term for a slide into a base. Also used in other sports for a sliding motion.
彼は二塁への滑り込みがうまい。
He is good at sliding into second base.
滑
I practice sliding every day.
noun
just in time; at the last moment; barely making it
Figurative use derived from the baseball slide: arriving, submitting, or finishing something just before a deadline or cutoff. Often used as 滑り込みで or 滑り込みセーフ.
締め切りに滑り込みで間に合った。
I made it just in time for the deadline.
最終電車に滑り込みで乗れた。
I barely caught the last train.