I. ˈpərk verb
Etymology: Middle English
Date: 14th century
intransitive verb
1.
a. : to thrust up the head, stretch out the neck, or carry the body in a bold or insolent manner
b. : to stick up or out jauntily
2. : to gain in vigor or cheerfulness especially after a period of weakness or depression — usually used with up
he's perk ed up noticeably
transitive verb
1. : to make smart or spruce in appearance : freshen , improve — often used with up
2. : to thrust up quickly or impudently
II. intransitive verb
Date: 1656
: percolate
III. noun
Date: 1824
: perquisite — usually used in plural