Commonly used in the British commonwealth countries, the term "batchmate" refers to a person who was in the same "batch" as you were in school, college, a military or administrative academy; or another intensive program where people get to know their cohorts quite well. The rough American equivalent is "classmate"; however, batchmate implies a closer sense of togetherness and bonding.

v. collectively or individually finding someone/something to blame for a problem, as opposed to brainstorming which connotes finding solutions to a problem

n. the act of finding someone/something to blame for a problem

(from a TV ad for HD television)