notadictionary.com
お布団のことアメリカの大学って呼んでる
→ “They call futons 'American universities'.”
お o = honorific prefix (prefix)
布団 futon = futon (noun)
の no = possessive marker (particle)
こと koto = matter / thing (noun)
アメリカ amerika = America (proper noun)
の no = possessive marker (particle)
大学 daigaku = university (noun)
大 dai = big / large
学 gaku = study / learning
って tte = quotation particle / colloquial copula (particle)
呼んでる yonderu = calling / is calling (verb, -teru form)
呼 yo = call
ん n = consonant sound / nasal
でる deru = to do / to be in a state of