IPA: //ˈdɒdʒəm//
KK: /ˈdɑdʒəm/
A small car that people can drive and bump into each other in a fun way, usually found at amusement parks.
The children laughed as they rode the dodgems at the fair.
Dodgem originates from the verb 'dodge' (from the early 19th century, possibly of unknown origin, but often associated with the idea of evading or avoiding) combined with the suffix '-em' (a colloquial form used in British English to denote a type of vehicle or action). The term 'dodgem' refers to a type of amusement ride where participants drive small cars and attempt to avoid colliding with one another.
Think of the word 'dodge' which means to avoid, and remember that 'dodgem' refers to the fun of avoiding collisions in a ride.