skull session

noun
1.
a meeting for the purpose of discussion, exchange of ideas, solving problems, etc.
2.
a meeting held by an athletic coach, as of football, to instruct team members in new plays or special strategy.
Also called skull practice.
Origin
1935-40
Slang definitions & phrases for skull practice

skull practice

noun phrase

The learning of plays, patterns, etc, esp in football, by blackboard demonstrations (1930s+ Sports)


skull session

noun phrase

An intensive learning and teaching period, esp a briefing session: two separate ''skull sessions'' with six members of the US negotiating team (1959+)