Main Entry: look up

Function: verb

Date: 14th century

intransitive verb

1 : to cheer up <look up—things are not all bad>
2 : to improve in prospects or conditions <business is looking up>transitive verb 1 : to search for in or as if in a reference work <look up an address>
2 : to seek out especially for a brief visit <look me up when you're here>