Correct spelling for the English word "calsson" is [kˈalsən], [kˈalsən], [k_ˈa_l_s_ə_n] (IPA phonetic alphabet).
The word "calsson" has Swedish origins. It is derived from the Old Swedish word "kalzun" or "kalsun", which ultimately come from the Old Norse word "kalsunnr". The word has been used in various Germanic languages, including Danish ("kaelse") and Norwegian ("kålsunn"), with similar meanings. In English, the word "calzon" or "calson" refers to a type of outer garment, particularly trousers or breeches.