Otto

from The Collaborative International Dictionary of English v.0.48

Otto \Ot"to\, n.
   See {Attar}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Attar \At"tar\, n. [Per. 'atar perfume, essence, Ar. 'itr, fr.
   'atara to smell sweet. Cf. {Otto}.]
   A fragrant essential oil; esp., a volatile and highly
   fragrant essential oil obtained from the petals of roses.
   [Also written {otto} and {ottar}.]
   [1913 Webster]

from U.S. Gazetteer (1990)

Otto, NC
  Zip code(s): 28763
Otto, TX
  Zip code(s): 76675
Otto, WY
  Zip code(s): 82434