Entry 2 senses · 2 variants Webster, 1913 Delph /dĕlf/ · IPA /dˈɛlf/ n. n. 01 n. Delftware. 1. Delftware. “Five nothings in five plates of delph.” — Swift. 02 n. The drain on the land side of a sea embankment. 1. The drain on the land side of a sea embankment.(Hydraul. Engin.)