noun

• A syringe or autoinjector filled with epinephrine, most frequently used for the treatment of acute allergic reactions to avoid or treat the onset of anaphylactic shock.
• (medical jargon) epinephrine
• An island of volcanic origin in the province of Shefa, Vanuatu.
• (music, informal) An Epiphone guitar.
• (category theory) Abbreviation of epimorphism. [(category theory) A morphism p such that for any other pair of morphisms f and g, if f∘p=g∘p, then f = g.]
• (medicine, colloquial) Abbreviation of epidural. [(medicine) An injection of anaesthetic into the epidural space of the spine, especially associated with pain relief during childbirth.]
• (medicine, colloquial) Abbreviation of episiotomy. [(medicine) A surgical incision through the perineum made to enlarge the vagina and assist childbirth.]
• Initialism of echoplanar image/imaging.
• (weaving) Initialism of ends per inch.