| ivory tower(noun, expression, protection, shelter, security) |
| resting place(noun, refuge) |
| safe house(noun, expression, shelter, hole, sanctuary) |
| sanctum(noun, refuge) |
| seclusion(noun, shelter, defense, sanctuary, refuge) |
| hiding place(noun, expression, protection, shelter, hole) |
| adytum(noun, shelter, defense, sanctuary, refuge) |
| apse(noun, hole, hideaway, den, lair) |
| ark(noun, shelter, defense, sanctuary, refuge) |
| carrel(noun, hole, hideaway, den, lair) |
| cloister(noun, shelter, defense, sanctuary, refuge) |
| convent(noun, shelter, defense, sanctuary, refuge) |
| covert(noun, protection, shelter, security, sanctuary) |
| cranny(noun, hole, hideaway, den, lair) |
| defense(noun, shelter, sanctuary, refuge, haven) |
| depression(noun, hole, hideaway, den, lair) |
| habitat(noun, shelter, defense, sanctuary, refuge) |
| hermitage(noun, shelter, defense, sanctuary, refuge) |
| hollow(noun, hole, hideaway, den, lair) |
| niche(noun, hole, hideaway, den, lair) |