Arch rim

(Phonetics) the line between the gums and the palate.

See also: Rim

References in periodicals archive ?
A specially-redesigned front bumper, sideskirts and wheel arch rims visually express the Abarth's sporting genetics, which is carried through to the cabin with a new, sporty instrument panel.
A specially redesigned front bumper, sideskirts and wheel arch rims visually express the Abarth's sporting genetics which is carried through to the cabin with a new, sporty instrument panel.