- Set deeply below a surface, as on a face
- His haggard eyes were deep-set, sunken into their sockets from exhaustion.
1920, Herman Cyril McNeile, chapter 1, in Bulldog Drummond:
- Deep-set and steady, with eyelashes that many a woman had envied, they showed the man for what he was—a sportsman and a gentleman. And the combination of the two is an unbeatable production.