system /ˈsɪstəm/ noun
plural systems
plural systems
Learner's definition of SYSTEM
[count] : a group of related parts that move or work together
see also ecosystem, pa system, public address system, solar system, sound system
: a body of a person or animal thought of as an entire group of parts that work together usually singular
: a group of organs that work together to perform an important function of the body see also central nervous system, immune system, nervous system
[count] : a way of managing, controlling, organizing, or doing something that follows a set of rules or a plan
often + of
see also honor system, metric system, operating system
the system disapproving : a powerful government or social organization that controls people's lives

all systems (are) go

see 2go

a shock to the/your system

see 1shock

get it out of your system

: to do something that you have been wanting to do so that you no longer feel a strong desire to do it
: to get rid of a strong emotion (such as anger) by doing something

the buddy system

see 1buddy