ooze leather(n = noun.substance) - a very soft leather made from the skins of calves and having a suede finish on the flesh side;
is a kind of leather

   Leather made from sheep and calf skins by mechanically forcing ooze through them; esp., such leather with a soft, finely granulated finish (called sometimes velvet finish) put on the flesh side for special purposes. Ordinary ooze leather is used for shoe uppers, in bookbinding, etc. Hence Ooze calf, Ooze finish, etc. [Webster 1913 Suppl.]

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