service

1 service /ˈsɚvəs/ noun
plural services
1 service
/ˈsɚvəs/
noun
plural services
Britannica Dictionary definition of SERVICE
1 
[count] : an organization, company, or system that provides something to the public
— see also answering service, civil service, dating service, foreign service, internal revenue service, postal service, public service, secret service, social services, wire service
2 
: work done by an organization or person that does not involve producing goods
[count]
— often plural
[noncount]
3 
[noncount]
a  : work done for a business or organization : employment
b  : work done for your country, government, etc.
— see also community service
c  old-fashioned : employment as a servant
4 
[noncount] : the act of helping or serving customers at a restaurant, hotel, store, etc.
— see also full-service, lip service, room service
5 
[noncount] : use of a machine or vehicle
: the state of being available for use
6 
: work that is done to repair something (such as a vehicle) or to keep it in good condition
[noncount]
[count]
7 
: a regularly scheduled trip on a bus, airplane, boat, etc.
[count]
[noncount]
8 
[count] : a religious ceremony
9 
US the service or British the services : a country's military forces : a country's army, navy, air force, etc.
10 
[count] : a set of dishes, cups, etc., that match each other
11 
[count] sports : the act of serving the ball in tennis, volleyball, etc. : serve
12 
[noncount] law : the act of giving legal papers to someone
13 
services British : a place along a highway for drivers to get food, gasoline, etc. — used both as a singular noun and as a plural noun

at someone's service

: ready or available for someone's use

be of service

: to be helpful or useful to someone

do (someone) a service

: to do something that helps (someone)
2 service /ˈsɚvəs/ verb
services; serviced; servicing
2 service
/ˈsɚvəs/
verb
services; serviced; servicing
Britannica Dictionary definition of SERVICE
[+ object]
1 
: to do the work that is needed to keep (a machine or vehicle) in good condition
2 
technical : to pay interest on (a loan or debt)
3 
: to provide (someone) with something that is needed or wanted