Abbott-Smith Manual Greek Lexicon
πετρώδης (G4075)
4 * πετρώδης , -ες ( πέτρα , εἶδος ), rock-like , rocky , stony : τὸ, τὰ π. , of shallow soil with underlying rock, Mt 13:5 , 20 , Mk 4:5 , 16 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain