IPA: /ˈpaɪk.mən/
KK: /ˈpaɪkˌmæn/
A soldier who carries a long spear called a pike, used in battles and formations.
In the medieval army, the pikeman stood at the front lines, ready to defend against cavalry charges.
Pikeman → It is formed from "pike" (from Middle English *pike*, meaning a long spear) and "man" (from Old English *mann*, meaning a person). A pikeman is a person who wields a pike, typically in a military context.
Think of a 'long spear' ('pike') being held by a 'person' ('man') — that's why a pikeman is someone who carries a pike.