/ ˈfɒrɪstə(r); NAmE ˈfɔːr-; ˈfɑːr-/ noun
a person who works in a forest, taking care of the trees, planting new ones, etc.
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WORD ORIGIN
Middle English : from Old French forestier , from forest from late Latin forestis (silva) , literally (wood) outside, from Latin foris outside, from fores door.