köldökzsinór (corda umbilicalis, funiculus umbilicalis) означает в английский

navel-string [navel-strings]▼◼◼◼noun
[UK: ˈneɪv.l̩ strɪŋ] [US: ˈneɪv.l̩ ˈstrɪŋ]

navel-cord▼noun
[UK: ˈneɪv.l̩ kɔːd] [US: ˈneɪv.l̩ ˈkɔːrd]