The Collaborative International Dictionary of English v.0.48:

Dormitory \Dor"mi*to*ry\, n.; pl. Dormitories. [L.
   dormitorium, fr. dormitorius of or for sleeping, fr. dormire
   to sleep. See Dormant.]
   1. A sleeping room, or a building containing a series of
      sleeping rooms; a sleeping apartment capable of containing
      many beds; esp., one connected with a college or boarding
      school. --Thackeray.
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   2. A burial place. [Obs.] --Ayliffe.
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            My sister was interred in a very honorable manner in
            our dormitory, joining to the parish church.
                                                  --Evelyn.
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