namam no. 385) guhah (गुहः) (గుహః)

aum guhaaya namah (ओं गुहाय नमः) (ఓం గుహాయ నమః)

He is called 'guhah' as He protects, as explained in the earlier namam #384 gahanah 

Thus this namam 'guhah' describes the protective nature of the paramaatma. It means He protects all the beings by being inside of them.

aum namo bhagavate vasudevaya!

PS: For the meanings of the other namams published earlier on this blog, please find them at the link given below:

http://value4value.blogspot.in/search/label/Vishnu%20Sahasra%20Nama%20Stotram