What is the meaning of Bayonet?

A blade mounted to the end of a long gun, originally with a handle inserted into the bore, now usually attached underbarrel.

A pin which plays in and out of holes made to receive it, and which thus serves to engage or disengage parts of the machinery.

To stab with a bayonet.

To compel or drive by the bayonet.

bayonet

1. a pointed instrument of the dagger kind fitted on the muzzle of a musket or rifle, so as to give the soldier increased means of offence and defence. Originally, the bayonet was made with a handle, which needed to be fitted into the bore of the musket after the soldier had fired

   a pointed instrument of the dagger kind fitted on the muzzle of a musket or rifle, so as to give the soldier increased means of offence and defence. Originally, the bayonet was made with a handle, which needed to be fitted into the bore of the musket after the soldier had fired

   a pin which plays in and out of holes made to receive it, and which thus serves to engage or disengage parts of the machinery

   a bayonet-type lens mount

   Source: wiktionary.org