The correct spelling for "reinders" is actually "reindeers." The word refers to a type of deer, specifically domesticated ones used for work in colder climates. The correct IPA transcription for "reindeers" is /ˈreɪn.dɪərz/. The first syllable "re" is pronounced as "ray" and the second syllable "in" is pronounced as "in." The "d" sound is pronounced in the middle, followed by the long "e" sound in the third syllable. The final "s" is pronounced as "z."