Likely related to Garin/Gary, from Germanic roots associated with the "spear."
Garine is likely related to Garin or Gary, ultimately from Germanic roots associated with the spear. That gives it a martial, old-rooted background even though the current form feels rare and somewhat refined.
Names derived from spear elements often carry ideas of readiness, force, and protection, though in modern use those meanings are usually felt more as heritage than as literal warfare. Garine has a smooth, surname-like quality that makes it feel understated and uncommon. The ending softens the harder Germanic core, giving the name a more lyrical finish.
It can sound old and new at the same time, which is often the hallmark of a rare name with historical residue. Garine feels restrained, distinctive, and quietly strong.