another word for the annoying bur bush and its offspring the bur! more specifically the bur bud itself, and not the bush although you could use the word to refer to the whole bush, as shown below.

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)