inner portion

The inner portion of this whip was an elastic wooden stock, much approved by the wagoners.

A fleshy or pulpy fruit in which the inner portion is hard or stony.

Stephen sat down on a bench that faced the inner portion, with the determination of a man who was not to be moved from his seat.

As a tree increases in age and diameter an inner portion of the sapwood becomes inactive and finally ceases to function.

Subsequent drying out of the inner portion is rendered more difficult by this "case-hardened" condition.