serve

do duty or hold offices

provide (usually but not necessarily food)

help to some food

mate with

deliver a warrant or summons to someone

do military service

work for or be a servant to

be used by

devote one's life or efforts to, as of countries, institutions, or ideas

be sufficient

contribute or conduce to

promote, benefit, or be useful or beneficial to

serve a purpose, role, or function

spend time in prison or in a labor camp