BT Ket 54a(48) :ההוא דאמ׳ להו, נדוניא ארבע מאה זוזי לברת, זל נדוניא‏ : a certain person who had said to them: "a dowry of 400 zuz for my daughter" and (meanwhile) the dowry lost value
See the entire entry for zll vb. to be of little value

BT Ket 54a(48) :פורנא ליתמי‏ : the ketubbah is for the orphans [i.e. the heirs]
See the entire entry for pren, purnā n.m. marriage settlement (<i>ketubbah</i>)