noun
guardian; custodian; preserver
A person who protects, guards, or preserves something or someone. Can be used in both literal and figurative contexts.
彼はこの森の守り手として知られている。
He is known as the guardian of this forest.
伝統文化の守り手が少なくなっている。
The custodians of traditional culture are decreasing.
noun
Archaic term for a person assigned to keep watch, such as a lookout or sentry. Not used in modern Japanese outside historical contexts.
城の守り手が夜通し見張りを続けた。
The castle's watchman kept watch all night.
守護者 is a more formal or literary term for a guardian or protector, often used in legal or fantasy contexts, while 守り手 is a more general and slightly softer term.
番人 specifically means a watchman or guard, focusing on the duty of watching over a place, whereas 守り手 can imply a broader protective role.
Compound of 守り (mamori, 'protection') + 手 (te, 'person'). The exact historical derivation is uncertain, but it follows a common pattern for agent nouns.