คำว่า ' trigger ' ( VT )
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คำนิยามในภาษาอังกฤษ (definition) :
[n.] A catch to hold the wheel of a carriage on a declivity.
[n.] A piece, as a lever, which is connected with a catch or detent as a means of releasing it; especially (Firearms), the part of a lock which is moved by the finger to release the cock and discharge the piece.