If you're looking for a verb related to silos, you might be thinking of:
* To silo: This is a verb meaning to isolate something or someone. The past tense of "to silo" is siloed.
* To fill a silo: This is a verb meaning to store something in a silo. The past tense of "to fill a silo" is filled a silo.
Let me know if you had a different verb in mind, and I can help you find the past tense!