/ˈlant͡so/
OriginBorrowed from English lance, French lance, Italian lancia, German Lanze, Yiddish לאַנס (lans), Polish lanca, all from Latin lancea (“small javelin, lance, light spear”). Doublet of lanĉi.
Formslancon(accusative, singular) · lancoj(plural) · lancojn(accusative, plural)
Source: Wiktionary