pool 1 n
1: an aggregation of the interests, obligations, or undertakings of several parties working together
an insurance pool
2: a group of people available for some purpose see also jury pool
pool 2 vt: to combine (as assets or votes) in a common form or effort; esp: to combine (interests) so as not to have a merger of companies considered a purchase for accounting purposes
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.