What is "strives"

Usage examples of "strives".

With his gaff, the gaffman hooks on to a sheet of blubber, and strives to hold it from slipping, as the ship pitches and lurches about.

If there are obstacles in his path, the warrior strives impeccably to overcome them.

One strives to immobilize the second attention only in the learning period.

But when a man suspects any wrong, it sometimes happens that if he be already involved in the matter, he insensibly strives to cover up his suspicions even from himself.