A gold coin of Zealand (Netherlands) worth 14 florins.
"The lawyer warned that the new ryder in the contract would void our insurance coverage if we didn't sign it immediately."
Alternative spelling of rider (“clause added to a document”)
An occupational surname, from occupations for a rider, cavalryman, or knight.
"The local history club recently uncovered documents proving that the wealthy Ryder family originally held their title as an occupational surname derived from their ancestors' service as cavalrymen in the medieval army."