IB -abbr

  1. in bond
  2. incendiary bomb

Ibe·ri·an [ī-'bir-ē-ən] -n, adj

  1. a member of one or more peoples anciently inhabiting the Caucasus in Asia between the Black and Caspian seas

Iberian -n, adj

  1. a member of one or more peoples anciently inhabiting parts of the peninsula comprising Spain and Portugal
  2. a native or inhabitant of Spain or Portugal or the Basque region
  3. one or more of the languages of the ancient Iberians

ibex ['ī-,beks] -n

  1. any of several wild goats (genus Capra,esp. C. ibex) living chiefly in high mountain areas of the Old World and having large recurved horns transversely ridged in front

ibid -abbr

  1. ibidem

ibi·dem ['i-bə-,dem; i-'bī-dəm, -'bē-] -adv

  1. in the same place

ibis ['ī-bəs] -n

  1. any of various chiefly tropical or subtropical wading birds (family Threskiornithidae) related to the herons but distinguished by a long slender downwardly curved bill

Ibi·zan hound [i-'bē-zən-, -thən-] -n

  1. any of a breed of slender medium-sized hunting dogs developed in the Balearic Islands with a short and smooth or a wirehaired coat

Ibo ['ē-(,)bō] -n

  1. a member of a people of the area around the lower Niger in Africa
  2. the languages of the Ibo people

IBRD -abbr

  1. International Bank for Reconstruction and Development

IBS -abbr

  1. irritable bowel syndrome

Ib·sen·ism ['ib-sə-,ni-zəm, 'ip-] -n, n or adj

  1. dramatic invention or construction characteristic of Ibsen
  2. championship of Ibsen's plays and ideas

ibu·pro·fen [,ī-byu̇-'prō-fən also ī-'byü-prə-fən] -n

  1. a nonsteroidal anti-inflammatory drug C 13H 18O 2used to relieve pain and fever