The term 'Slangy BOXER' is a combination of two words, 'slangy' and 'BOXER'. Slangy is an informal language used by a particular group or profession, while BOXER is a type of athletic clothing. The crossword solution for this term is 'PUG', which is a type of small, short-muzzled dog with a wrinkled face and curled tail. Pugs are known for their friendly and playful personalities, and have become popular pets in recent years.