
1) Iranian architecture 2) Polish boy name 3) Slavic boy name
Found on
https://www.crosswordclues.com/clue/iwan

German slang for a Soviet soldier (similar to "Jerry" or "Kraut", the British and American slang terms for Germans).
Found on
http://en.wikipedia.org/wiki/Glossary_of_German_military_terms

An iwan (Persian: {nastaliq|ایوان} eyvān, إيوان Iwan, also spelled ivan) is a rectangular hall or space, usually vaulted, walled on three sides, with one end entirely open. The formal gateway to the iwan is called pishtaq, a Persian term for a portal projecting from the facade of a building, usually decorated with calligraphy bands, gla...
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http://en.wikipedia.org/wiki/Iwan
[name] It is a Welsh and Cornish variant of Euan or Ewen, which is derived from Eoghan and is of Irish and Gaelic origin. Owain (or Owen) is the most common Welsh variant of this name. It is also found in Germanic and Slavic languages as a variant of Ivan (name), which is a form of the Biblical name John. The Welsh given name related to thi...
Found on
http://en.wikipedia.org/wiki/Iwan_(name)

a vaulted portal opening onto a courtyard: used often in Iranian mosque architecture.
Found on
https://www.infoplease.com/dictionary/iwan

Iwan is a Polish name for boys. The meaning is `God is gracious` The name is very rarely given inthe United States. The name Iwan is most commonly given to Dutch boys. What do they use in other countries? Ivan (Slavic) The name sounds like: Ewan, Ian Similar names are: Twan, Ilan, Idan, Ifan, Iman See also: Iefan, Ifan, Sión, Ieuan, Jon, Juan, Jan...
Found on
https://www.pregnology.com/names/boys/Iwan
No exact match found.