Scrub

scrub

The term has various meanings depending on context, but typically deals with erasing or cleaning up data. See data scrubbing, memory scrubbing and audio scrubbing.

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scrub

1. 

a. vegetation consisting of stunted trees, bushes, and other plants growing in an arid area

b. (as modifier): scrub vegetation

2. an area of arid land covered with such vegetation

3. 

a. an animal of inferior breeding or condition

b. (as modifier): a scrub bull

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scrub [skrəb]

(aerospace engineering)

To cancel a scheduled firing, either before or during countdown.

(agriculture)

An inferior animal of nondescript breeding.

(computer science)

To examine a large amount of data and eliminate duplicate or unneeded items.

(ecology)

A tract of land covered with a generally thick growth of dwarf or stunted trees and shrubs and a poor soil.

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Scrub 

thickets of xerophytic, mainly evergreen shrubs found in arid regions of Australia. The shrubs reach a height of 2 m. Prevailing species are scrub eucalyptus, acacia, casuarina, and stunted shrubs of the families Fabaceae and Myrtaceae. The vegetation is characterized by xerophytic structure. The stiff foliage is generally gray-green with a waxy bloom; often there are phyllodes or thorns instead of leaves. The herbaceous covering is poorly developed, consisting of tufted grasses, annual strawflowers, saltworts, and some succulents.

In the most arid regions scrub eucalyptus is common (malee scrub). Regions having an annual precipitation of 150–250 mm are marked by a predominance of various acacia species (mulga scrub). In the tropical and somewhat more humid zone, brigalow acacia predominates, and sometimes eucalyptus and bottle trees are encountered (brigalow scrub).

Scrublands are also found in Africa.