means A person or member of a group that moves from place to place rather than settling permanently, traditionally to find pasture, water, or game.

from From Greek 'nomas' (plural 'nomades'), meaning 'wandering in search of pasture,' which came into English via Latin 'nomas' and French 'nomade.' The root is tied to Greek 'nemein,' 'to pasture, to graze' — so a nomad is, at heart, someone following where the grass grows. That same grazing-and-portioning root is also a cousin of 'nemesis' (originally 'distribution of what's due') and lurks behind 'economy.'