dun·geon 
(dŭnjən)
(dŭnjən)n.
1. A dark, often underground chamber used to confine prisoners.
2. A donjon.
[Middle English donjon, castle keep, dungeon, from Old French, keep, probably from Medieval Latin domniō, domniōn-, the lord's tower, from Latin dominus, master; see dem- in the Appendix of Indo-European roots.]
- catch
- Catch-22
- catchable
- catch a crab
- catchall
- catch-as-catch-can
- catch basin
- catch breath
- catch death
- catcher
- catch fire
- catchfly
- catchiness
- catching
- catch it
- catchment
- catchment area
- catch on
- catch (one's) breath
- catch one's breath
- catch (one's) death
- catch one's death
- catch out
- catchpenny
- catch phrase