The Collaborative International Dictionary of English v.0.48:

latched \latched\ adj.
   secured by means of a latch against opening.

   Syn: fastened.
        [WordNet 1.5 +PJC]

The Collaborative International Dictionary of English v.0.48:

Latch \Latch\, v. t. [imp. & p. p. Latched (l[a^]cht); p. pr.
   & vb. n. Latching.] [OE. lacchen. See Latch. n.]
   1. To catch so as to hold. [Obs.]
      [1913 Webster]

            Those that remained threw darts at our men, and
            latching our darts, sent them again at us.
                                                  --Golding.
      [1913 Webster]

   2. To catch or fasten by means of a latch.
      [1913 Webster]

            The door was only latched.            --Locke.
      [1913 Webster]