All 5 Uses

adapt
in
Walden
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Nature is as well adapted to our weakness as to our strength.†
Chpt 1 *

well adapted = well suited
Man is an animal who more than any other can adapt himself to all climates and circumstances.†
Chpt 1 *

adapt = change to fit a different situation; or make suitable
floor this cellar with plank, and wainscot it overhead for a ceiling, raise a roof of spars clear up, and cover the spars with bark or green sods, so that they can live dry and warm in these houses with their entire families for two, three, and four years, it being understood that partitions are run through those cellars which are adapted to the size of the family.†
Chpt 1
In the course of three or four years, when the country became adapted to agriculture, they built themselves handsome houses, spending on them several thousands.†
Chpt 1
When I think of acquiring for myself one of our luxurious dwellings, I am deterred, for, so to speak, the country is not yet adapted to human culture, and we are still forced to cut our spiritual bread far thinner than our forefathers did their wheaten.†
Chpt 1

Definitions:

(1) (adapt as in: adapted to the new rules)
changed to fit a different situation; or made suitable
(2) (adapted as in: the species is well adapted for)
to be especially well suited or appropriate for something
(3) (meaning too rare to warrant focus)