adjective
Relating to a section.
Separating into sections.
Relating to conflict between areas.
noun
An item of furniture composed of modular sections; usually specifically a sectional sofa.
(aviation) A sectional chart, a type of map used for navigation in the air.
(sports) A tournament or match held at the section level, typically between the regionals and the championships.
(music) A band sectional, in which one section of a band or orchestra practices separately.