jammy /ˈd͡ʒæm.i/adjective 4noun 3forms 3 adjective4 •Covered in jam.a child's jammy fingers •(UK, informal) Lucky; especially undeservedly so. •Containing jam. •Resembling jam in taste, texture, etc. noun3 •[before a noun] Attributive form of jammies.“[…]I start pleading, ‘Come here.... Please put your jammy top on.... Let me finish dressing you.’ “At last, I’ve got the pajama top over his head, and he starts yelling, ‘Ouch! ouch!’ — 2002 •(slang) A gun.I got the jammy loaded in one hand. — 2025 •(US, slang) A penis.I felt on her big fat fanny / Pulled out the jammy and killed the punanni — 1992 formsjammies · jammier · jammiest