silo

noun (plural silos)

• 1a tall tower or pit on a farm used to store grain.
• a pit or other airtight structure in which green crops are compressed and stored as silage.

• 2an underground chamber in which a guided missile is kept ready for firing.

• 3a system, process, department, etc. that operates in isolation from others:it’s vital that team members step out of their silos and start working together [as modifier]:we have made significant strides in breaking down that silo mentality