tangerine

Tangerine comes from Tanger, the French name for Tangier, Morocco, combined with the English suffix -ine. That suffix traces back through Old French -in and Latin -inus to Proto-Indo-European *-inos, a marker meaning "of or belonging to."

The word simply names the fruit after the place it was associated with, Tangier, with -ine marking its origin there — the facts don't show any further shift in meaning.

The suffix -ine shares ancestry with other English words ending in -ine that descend from Latin -inus, though no specific cognate fruit or word is given in the facts.