1
general::
Phrase(s): pal around (with someone)
to associate with someone as a good friend. • I like to pal around with my friends on the weekends. • They like to pal around. • They often palled around with each other.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
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]
American Heritage Idioms