What is "lock in"

n. A sleepover party, usually held in a public place such as a church or school, in which the participants are not allowed to leave until the next morning. vb. 1 To secure someone or something in a locked enclosure. 2 To fix the value of something potentially variable.

1. v. close with or as if with a tight seal; "This vacuum pack locks in the flavor!" [syn: seal in]

2. place in a place where something cannot be removed or someone cannot escape; "The parents locked her daughter up for the weekend"; "She locked her jewels in the safe" [syn: lock away, lock, put away, shut up, shut away, lock up]

Lock In is a science fiction police procedural novel by American writer John Scalzi. The book was published by Tor Books in August 2014. The audiobook of the novel was released in two versions, one narrated by Wil Wheaton and one by Amber Benson.