pozůstatek znamená v angličtina

remnant [remnants]▼(small portion remaining of a larger thing or group)
noun
[UK: ˈrem.nənt] [US: ˈrem.nənt]

vestige [vestiges]▼(faint mark or visible sign left by something which is lost)
noun
[UK: ˈve.stɪdʒ] [US: ˈve.stɪdʒ]