IPA: /ˈlænsər/
KK: /ˈlænsər/
A soldier who fights on horseback and uses a long weapon called a lance.
The lancer charged into battle, brandishing his lance with great skill.
Lancer → It is derived from the Old French word *lanceor*, which comes from *lance* (meaning a spear or lance) and the suffix *-or* (meaning one who). A lancer is therefore one who wields a lance.
Think of someone who wields a 'spear' ('lance') — that's why a lancer is a person who uses a lance.