What is the correct term for the circular holes in bricks?

[Michael Thomas]

What is the correct term for the circular holes in bricks?

[John Arnold]

I'm going with "cores".

I don't actually know anything, I just came up with this by doing a web search.

"CORE. A hollow space within a concrete masonry unit formed by the face shells and webs. The holes in clay units. Also called a cell."

Masonry Details (http://www.masonrydetails.com/webpage/webpage.cfm?UUID=C21709DE-65BF-1D65-CE7EAC1BBD55F4E0)

[John Arnold]

Brick Terminology (http://www.tpub.com/content/construction/14045/css/14045_149.htm)

BRICK TERMINOLOGY Standard U.S. bricks are 2 1/4 by 3 3/4 by 8 inches nominal size. They may have three core holes or ten core holes.

[Michael Thomas]

Thanks!

[Bob Harper]

cores for hole and 'frog' for a depression in one face meant to key each brick in.