PA
Meaning of PA in English
/ pɑː; NAmE / noun
( old-fashioned , informal ) father :
I used to know your pa.
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WORD ORIGIN
early 19th cent.: abbreviation of papa .
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005