Where does “Brookhaven” come from?

Brookhaven combines English brook with haven, itself from Middle English haven and Old English brūcan meaning "to use or enjoy," ultimately from Proto-Germanic habjaną and Proto-Indo-European keh₂p- meaning "to grasp."

Ancestry of “Brookhaven”, step by step

Brookhaven traces back through two separate lines of ancestry.

via English Brook

StepLanguageWordMeaning
1EnglishBrookfor someone living by a brook
2Dutchbroekpair of trousers, pair of pants; pair of...
3Middle Dutchbroectrousers, pants, breeches; low land, wetland,...
4Old Dutchbruoctrousers, pants, breeches; wetland, marsh
5Proto-Germanicbrōksrear end, rump, hindquarters; leggings, pants,...
6Proto-Germanicbrāks
7Proto-Indo-Europeanbʰrāg-rump, hock, hindquarters
8Proto-Indo-Europeanbʰrēǵ-to shine, shimmer

via English haven

StepLanguageWordMeaning
1EnglishhavenA harbour or anchorage protected from the sea; A...
2Middle Englishhavento have
3Old Englishhabbanto have, to possess; have
4Proto-West Germanichabbjanto have; to lift
5Proto-Germanichabjanąto have, to hold; to lift, heave
6Proto-Indo-Europeankh₂pyé-
7Proto-Indo-Europeankeh₂p-to seize, grab; to seize; take up; lift; to take,...
Every word from Proto-Indo-European bʰrēǵ-