the.com/patrol

Walking in circles so that bad things happen somewhere else.

means To move through an area on a repeated, watchful round in order to check on or guard it.

from From French patrouiller, which once meant something far less dignified: to paddle or splash about in mud — related to patte, 'paw' or 'foot.' The sense shifted from slogging through muck to marching a military beat, probably because early foot soldiers on watch were, quite literally, trudging through wet and dirty ground. English borrowed the word, mud and all, in the 1600s, and let the muck fade while the walking stayed.

original sense
literally meant to paddle in mud
military roots
17th-century French army camp duty
police adoption
became standard English policing term by 1800s
space version
NASA still calls orbit checks station patrols
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