encloser
/ɛnˈkloʊzər/Definitions
1. noun
A person or thing that encloses
“The company is looking for an encloser to secure the abandoned building.”
2. verb
To enclose or surround something
“The farmer will enclose the garden to keep out the rabbits.”
3. verb
To take or catch something by enclosing it
“The net will enclose the fish.”