Code coverage means, how well your test set is covering your source code. i.e. to what extent is the source code covered by the set of Test cases. As mentioned in above answers, there are various coverage criteria, like paths, conditions, functions, statements, etc.
Chiasmus. Definition: Chiasmus is a specific type of parallelism. It consists of two parallel phrases in which corresponding words or phrases are placed in the opposite order.
Primus is a band formed in California in the mid-1980s by two ex-members of thrash metal band Blind Illusion, Les Claypool and Larry LaLonde. Les (vocals and bass guitar) has been the only constant member.