köken: Perhaps from Vulgar Latin *umbulita (“small navel”), clipped from Vulgar Latin *umbulicus, from Latin umbilīcus (“navel”), with [um] being reanalyzed as the feminine indefinite article o at some stage as same is evidenced by related Romanian buric. The latter may have provoked such analogy. On grounds of phonetic difficulties with considered Albanian bark, rather unlikely a substrate word.
köken: From Old Danish løpæ, from Old Norse hlaupa (“to leap, jump, spring”), Proto-Germanic *hlaupaną, cognate with Swedish löpa, English leap, German laufen, Dutch lopen.
aile: afløb, forløb, gennemløbe, løb, løbe an, løbe igennem, løbe ind, løbe over, løbe på, løbe rundt
köken: From Malay babat, from Proto-Malayo-Polynesian *bajbaj, from Proto-Austronesian *bajbaj (“loosen, untie, unwrap; unravel; to clear forest”), *-baj (“unravel, untie”).