Top side. The front side of the cover of a book in binding.
Tree calf. A bright brown calf stained by acids in conventional imitation of the trunk and branches of a tree.
Trimmed. The edges of a book are said to be trimmed when the edges of the larger or projecting leaves only have been cut.
Trindle. A strip of thin wood or iron used to take the round out of a book when it is cut.
Tub. The stand which supports the lying press. Originally an actual tub to catch the shavings.
Turkey morocco. Made of goatskins from Turkey. It is very strong, durable leather; expensive, but worth the money.
Turning up. The process of taking the round out of a book when the edge is cut. All books that are cut in boards have a pair of trindles thrust between the boards and across the back to assist in this operation.
Tying up. Tying a volume with heavy twine after the leather cover has been drawn on to make the leather adhere to the sides of the bands; also to help in setting the head.
Uncut. A book is said to be uncut when the edges of the paper have not been cut with the cutting machine.