Where does “Prahm” come from?

Prahm (German Low German) comes from Middle Low German prām, from Czech prám, from Proto-Slavic pormъ, from Proto-Indo-European pórmos, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “Prahm”, step by step

StepLanguageWordMeaning
1Middle Low Germanprām—
2Czechprámraft
3Proto-Slavicpormъferry
4Proto-Indo-Europeanpórmos—
5Proto-Indo-Europeanper-before, in front; first; to go through
6Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Proto-Indo-European pórmos →