Session (CD)
WordNet
noun
(1) A meeting devoted to a particular activity
"A filming session"
"A gossip session"
(2) A meeting for execution of a group's functions
"It was the opening session of the legislature"
(3) A meeting of spiritualists
"The seance was held in the medium's parlor"
(4) The time during which a school holds classes
"They had to shorten the school term"