The headword is a late form for e(/yhma (cf. under phi 23), attested in the Septuagint (e.g. in Genesis 25.29 & 34: Jacob and Esau and the "mess of pottage").
The gloss here is truncated, as indicated, but see Hesychius epsilon7701: 'that which some call siraion [sigma 474], but others sweet'.