Webster's Revised Unabridged Dictionary · 1913

Desert

Desert (de*zẽrt") , noun

[Old French deserte, desserte, merit, recompense, from deservir, desservir, to merit. See Deserve.]

That which is deserved; the reward or the punishment justly due; claim to recompense, usually in a good sense; right to reward; merit.
According to their deserts will I judge them. — Ezek. vii. 27
Andronicus, surnamed Pius For many good and great deserts to Rome. — Shakespeare
His reputation falls far below his desert. — A. Hamilton

Desert (dez"ẽrt) , noun

[French désert, Latin desertum, from desertus solitary, desert, pp. of deserere to desert; de- + serere to join together. See Series.]

1.
A deserted or forsaken region; a barren tract incapable of supporting population, as the vast sand plains of Asia and Africa which are destitute of moisture and vegetation.
A dreary desert and a gloomy waste. — Pope
2.
A tract, which may be capable of sustaining a population, but has been left unoccupied and uncultivated; a wilderness; a solitary place.
He will make her wilderness like Eden, and her desert like the garden of the Lord. — Is. li. 3
Before her extended Dreary and vast and silent, the desert of life. — Longfellow

Also figuratively.

Desert , adjective

[Compare Latin desertus, past participle of deserere, and French désert. See 2d Desert.]

Of or pertaining to a desert; forsaken; without life or cultivation; unproductive; waste; barren; wild; desolate; solitary; as, they landed on a desert island.
He... went aside privately into a desert place. — Luke ix. 10
Full many a flower is born to blush unseen, And waste its sweetness on the desert air. — Gray
Collocations (3)
Desert flora (Botany) , the assemblage of plants growing naturally in a desert, or in a dry and apparently unproductive place.
Desert hare (Zoology) , a small hare (Lepus sylvaticus, var. Arizona) inhabiting the deserts of the Western United States.
Desert mouse (Zoology) , an American mouse (Hesperomys eremicus), living in the Western deserts.

Desert (de*zẽrt") , transitive verb

[Compare Latin desertus, past participle of deserere to desert, French déserter. See 2d Desert.]

1.
To leave (especially something which one should stay by and support); to leave in the lurch; to abandon; to forsake; -- implying blame, except sometimes when used of localities; as, to desert a friend, a principle, a cause, one's country.
The deserted fortress. — Prescott
2.
(Military) To abandon (the service) without leave; to forsake in violation of duty; to abscond from; as, to desert the army; to desert one's colors.

Desert , intransitive verb

To abandon a service without leave; to quit military service without permission, before the expiration of one's term; to abscond.
The soldiers... deserted in numbers. — Bancroft