门闩

門閂
ménshuān
  1. horizontal bar to hold a door closed (made of wood or metal)
  2. door bolt

CEDICT

latch (fastening for a door); door bolt

Wiktionary

关门的横木。《喻世明言．卷一五．史弘肇龙虎君臣会》：「当夜二更三点前后，史弘肇真个来推大门，力气大，推折了门闩，走入来。」《红楼梦．第八○回》：「薛蟠更被这一席话激怒，顺手抓起一根门闩来，一迳步找着香菱。」也作「门栓」。

重編國語辭典

Entry Composition

1 门 mén
  1. gate
  2. door
  3. gateway
  4. doorway
  5. opening
  6. valve
  7. switch
  8. way to do something
  9. knack
  10. family
  11. house
  12. (religious) sect
  13. school (of thought)
  14. class
  15. category
  16. phylum or division (taxonomy)
  17. classifier for large guns
  18. classifier for lessons, subjects, branches of technology
  19. (suffix) -gate (i.e. scandal; derived from Watergate)

classifiers: 扇, 個
2 闩 shuān
  1. bolt
  2. latch
  3. to bolt
  4. to latch