Secret lien
Defined in 1 dictionary — Black's (1910)
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
A lien reserved by the vendor of .chattels, who has delivered them to the vendee, to secure the payment of the price, which is concealed from all third persons. As to the particular kinds of liens described as "Bailee's," "Judgment," "Maritime," "Mechanics'," "Municipal," and "Vendors' " liens, see those titles.
Defined under Lien in Black's Law Dictionary.