Definition of silo
1 : a trench, pit, or especially a tall cylinder (as of wood or concrete) usually sealed to exclude air and used for making and storing silage
2a : a deep bin for storing material (such as coal)b : an underground structure for housing a guided missile
Recent Examples of silo from the Web
According to The National Interest, the U.S. Navy seeks a way to reload its vertical launch system silos at sea.
The Pentagon has a total of 36 missile interceptors in underground silos on military bases in Alaska and California, due to increase to 44 by year’s end.
In May 2014, city staff noted that of the campus' 11 structures, only the Neil Building and a silo don't need roof repairs or replacements, with the tally for all the roof work estimated at more than $1 million.
But especially in the city, this remains a place where unfriendly competition between sectors and schools, life in organizational silos, and just plain unhappy politics are alive and well.
The county tore down the Victorian house where the residents lived and demolished the silo on the site, but left the barn standing.
In Tuesday’s U.S. test, the Pentagon’s Missile Defense Agency launched an interceptor rocket from an underground silo at Vandenberg.
In Tuesday's U.S. test, the Pentagon's Missile Defense Agency launched an interceptor rocket from an underground silo at Vandenberg Air Force Base in California.
In Tuesday’s US test, the Pentagon’s Missile Defense Agency launched an interceptor rocket from an underground silo at Vandenberg Air Force Base in California.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'silo.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of silo
First Known Use: 1856See Words from the same year
SILO Defined for English Language Learners
Definition of silo for English Language Learners
: a tower that is used to store food (such as grain or grass) for farm animals
: an underground structure that is used for storing and firing a missile
SILO Defined for Kids
Definition of silo for Students
: a covered trench, pit, or especially a tall round building in which silage is made and stored
Seen and Heard
What made you want to look up silo? Please tell us where you read or heard it (including the quote, if possible).