SILO definition: 1. a large, round tower on a farm for storing grain or winter food for cattle, especially silage…. Learn more. 3 meanings: 1. a pit, trench, horizontal container, or tower, often cylindrical in shape, in which silage is made and stored 2..... Click for more definitions. Image A silo is a structure for storing bulk mA silo is a structure for storing bulk materials. Silos are used in agriculture to store grain or fermented feed known as silage. Silos are more commonly used for bulk storage of grain, food products. Three types of silos are in widespread use today: tower silos, bunker silos, bag silos and silage piles. Tower Silo: Storage silos are cylindrical structures, typically 10 to 90 ft (3 to 27 m) in diameter and 30 to 275 ft (10 to 90 m) in height ... A silo is a facility used to store items. Its main function is to protect the stored materials from the influence of factors such as weather, while keeping the materials in good condition. Silos play an important role in agriculture, industry and commerce.