pec

Etymology 1

noun

1. (colloquial, usually in the plural) The pectoralis major muscle.
   He's flexing his pecs at anyone who'll look.
   The quest for perfect pecs is so strong that psychiatrists now sometimes refer to it as “bigorexia,” a form of muscle dysmorphia exhibited mostly by men and characterized by excessive weight lifting, a preoccupation with not feeling muscular enough and a strict adherence to eating foods that lower weight and build muscle. 2022-03-05, Alex Hawgood, “What Is ‘Bigorexia’?”, in The New York Times, →ISSN

Etymology 2

Latin pecūnia (“money”)

noun

1. (UK, slang, obsolete, Eton College) Money.