someone or something easily understood or interpreted; something very clear:
The child’s face is an open book.
a person or thing without secrecy or concealment that can be easily known or interpreted
pertaining to a test during which a student may refer to a book or books
He did not prepare very much for the open-book test.
something or someone that is easily understandable; something that is very clear; someone who conceals nothing
Her life is an open book.
Something or someone that can be readily examined or understood, as in His entire life is an open book. This metaphoric expression is often expanded to read someone like an open book, meaning “to discern someone’s thoughts or feelings”; variations of this metaphor were used by Shakespeare: “Read o’er the volume of young Paris’ face,” (Romeo and Juliet, 1:3) and “O, like a book of sport thou’lt read me o’er” (Troilus and Cressida, 4:5). [ Mid-1800s ]
For an antonym, see closed book
- Open box testing
white box testing
- Open brethren
noun 1. one of the two main divisions of the Plymouth Brethren that, in contrast to the Exclusive Brethren, permits contacts with members outside the sect
operating system A version of BSD Unix with an emphasis on security. A lot of security work that is ported to other free operating systems originates with OpenBSD and a lot of code review is done here. Sub-projects of OpenBSD include implementations of SSH (http://openssh.org/), ntpd (http://openntpd.org/), and CVS, to be called OpenCVS. OpenBSD Home […]
noun 1. an audition, especially for actors or dancers, open to anyone wishing to try out.