pal around

Associate as friends or chums, as in Bill and Jim have been palling around for years. This expression makes a verb of the noun pal, which comes from the Gypsy word for “brother.” [c. 1900]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.