/ ˈfaɪəstɑːtə(r); NAmE ˈfaɪərstɑ:rtə(r)/ noun ( NAmE )
1.
a device that allows you to start a fire, usually by hitting a piece of flint (= a hard grey stone) against a piece of steel
2.
= firelighter
3.
a person who commits the crime of deliberately setting fire to sth
SYN arsonist