latch /ˈlæʧ/
  門閂,窗閂,插銷,彈簧鎖(v.)閂上,鎖上;獲得,抓住,理解
  latch
  閂 鎖存
  Latch v. t.  To smear; to anoint. [Obs.]
  Latch, n.
  1. That which fastens or holds; a lace; a snare. [Obs.]
  2. A movable piece which holds anything in place by entering a notch or cavity; specifically, the catch which holds a door or gate when closed, though it be not bolted.
  3. Naut. A latching.
  4. A crossbow. [Obs.]
  Latch, v. t. [imp. & p. p. Latched p. pr. & vb. n. Latching.]
  1. To catch so as to hold. [Obs.]
     Those that remained threw darts at our men, and latching our darts, sent them again at us.   --Golding.
  2. To catch or fasten by means of a latch.
     The door was only latched.   --Locke.
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  latch
       n 1: spring-loaded doorlock that can only be opened from the
            outside with a key [syn: door latch]
       2: catch for fastening a door or gate; a bar that can be
          lowered or slid into a groove
       v : fasten with a latch; "latch the door"