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serve

1 serve /ˈsɚv/ verb
serves; served; serving
1 serve
/ˈsɚv/
verb
serves; served; serving
Britannica Dictionary definition of SERVE
[+ object] : to give (food or drink) to someone at a meal, in a restaurant, etc.
see also serve up (below)
: to give food or drink to (someone)
[+ object]
[no object]
[+ object] : to be enough food for (a particular number of people)
[+ object] : to provide service to (a customer) : to help (a customer) make purchases
[no object]
: to be used or seen in a particular way + as
: to have a particular result or effect often + as
often followed by to + verb
[+ object] : to be useful or helpful to (someone)
: to provide what is needed by or for (someone or something)
[+ object]
[no object]
see also self-serving
[+ object] : to provide (an area or group of people) with a particular service
: to hold a particular office, position, etc. : to perform a duty or job
[no object]
[+ object]
[+ object] : to be in prison for or during (a period of time)
[+ object] law : to send or give (someone) official legal papers
[+ object] : to give respect and service to (someone or something)
10 
sports : to throw a ball into the air and hit it over a net to start play in tennis, volleyball, etc.
[no object]
[+ object]

first come, first served

see 2first

serve out

[phrasal verb]
serve (something) out or serve out (something)
: to complete (a term in office, a prison sentence, etc.)

serve (someone) right

used to say that someone who has behaved badly deserves a particular punishment, problem, etc.

serve two masters

: to give equal support to two different causes, groups, etc.

serve up

[phrasal verb]
serve up (something) or serve (something) up
: to give (food) to someone at a meal, in a restaurant, etc.
sometimes used figuratively
2 serve /ˈsɚv/ noun
plural serves
2 serve
/ˈsɚv/
noun
plural serves
Britannica Dictionary definition of SERVE
[count] sports
: the act or action of throwing a ball into the air and hitting it over a net to start play in tennis, volleyball, etc.