sinkhole
 US /ˈsɪŋk.hoʊl/
 UK /ˈsɪŋk.hoʊl/
1. 
hố sụt
a hole in the ground, especially in an area of limestone rock, that has been formed naturally, for example by water that has worn away the rock:
:
• 
Rain gradually dissolves the limestone, forming features such as limestone pavements, sinkholes, and caves.
1. 
hố sụt
to direct internet activity to a different part of a network or server, so that it cannot damage the part it is being aimed at:
:
• 
This simple act sinkholed the malware.