'Hollow' in the Bible

And he spoke unto the man clothed with linen, and said, Come in between the wheels, under the cherub, and fill the hollow of thy hands with coals of fire from between the cherubim, and scatter them over the city. And he went in in my sight.

Then the cherub stretched out his hand from among the cherubim toward the fire that [was] among the cherubim, and he lifted up and gave [it] into the hollow of the hand of [the man] clothed with linen, and he took [it], and he went out.

And these are the measures of the altar in cubits: (the cubit being a cubit and a hand's measure;) its hollow base is a cubit high and a cubit wide, and it has an overhanging edge as wide as a hand-stretch all round it: