the indentation in the face of a brick, which makes it both easy to handle and bed into mortar.

An angled recess in the top face of some house-bricks.

a depression in the face of the brick made by a panel placed in the bottom of the mold. Lettering is placed on this panel to make either a raised or depressed letter in the frog.

Indent on bed face of a brick

A depression imprinted in the upper surface of a brick, to save clay, reduce weight and increase the strength of the wall. Bricks should always be laid frog uppermost.

A depression in the bed surface of a brick. Sometimes called a panel.

A depression in one (or sometimes both) of the bed surfaces of a pressed back.

Depression or groove in the surface of a brick, in one or both of the larger sides, which provides an attachment for the adjacent brick mortar joints.