The Collaborative International Dictionary of English v.0.48:

Detriment \Det"ri*ment\ (d[e^]t"r[i^]*ment), n. [L. detrimentum,
   fr. deterere, detritum, to rub or wear away; de + terere to
   rub: cf. F. d['e]triment. See Trite.]
   1. That which injures or causes damage; mischief; harm;
      diminution; loss; damage; -- used very generically; as,
      detriments to property, religion, morals, etc.
      [1913 Webster]

            I can repair
            That detriment, if such it be.        --Milton.
      [1913 Webster]

   2. A charge made to students and barristers for incidental
      repairs of the rooms they occupy. [Eng.]

   Syn: Injury; loss; damage; disadvantage; prejudice; hurt;
        mischief; harm.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Detriment \Det"ri*ment\, v. t.
   To do injury to; to hurt. [Archaic]
   [1913 Webster]

         Other might be determined thereby.       --Fuller.
   [1913 Webster]

WordNet (r) 3.0 (2006):

detriment
    n 1: a damage or loss [syn: detriment, hurt]