core

In general usage, an essential part of a thing surrounded by other essential things.

the core of an apple or quince

In general usage, an essential part of a thing surrounded by other essential things.

Reindeer are well suited to the taiga’s frigid winters. They can maintain a thermogradient between body core and the environment of up to 100 degrees, in part because of insulation provided by their fur, and in part because of counter-current vascular heat exchange systems in their legs and nasal passages.

In general usage, an essential part of a thing surrounded by other essential things.

In general usage, an essential part of a thing surrounded by other essential things.

the core of the square

The most important part of a thing or aggregate of things wherever located and whether of any determinate location at all; the essence.

the core of a subject

Jones’ sad eyes betray a pervasive pain his purposefully spare dialogue only hints at, while the perfectly cast Brolin conveys hints of playfulness and warmth while staying true to the craggy stoicism at the character’s core.

Forming the most important or essential part.

Privately held businesses may hold assets or have charges to their financial statements which are not core to their main business activity.

Private-equity nabobs bristle at being dubbed mere financiers. Piling debt onto companies’ balance-sheets is only a small part of what leveraged buy-outs are about, they insist. Improving the workings of the businesses they take over is just as core to their calling, if not more so. Much of their pleading is public-relations bluster.

Deeply and authentically involved in the culture surrounding the sport.

Our interest is not in core skaters such as young males and pro skaters but the voices of those on the periphery of the subculture.

We had a segmentation strategy, where the small, independent core skate shops — the three hundred boutiques around the country who really created us — had a certain product line that was exclusive to them. […] We said to the core shops, you don't have to compete with the malls.

To remove the core of an apple or other fruit.

To cut or drill through the core of (something).

But the other thing to take into account is, when you look at the Katahdin and the Polyphemus, they both have their boiler plants pretty much amidships or slightly forward of amidships, which means that, in the event of a heat-lance strike on the boiler room, not only is that gonna core through the ship right at the center of mass, which is obviously bad for its continued structural stability, but the boilers going up is gonna incinerate pretty much anybody on the bridge, which is gonna leave it completely out of control, and is probably gonna break the ship clean in half right there and then, none of which really speaks to the ship's being able to continue onwards with enough momentum to take down a Martian tripod.

To extract a sample with a drill.