Ligatures.—Two or more letters cast on the same shank, as ff, fi, fl, ffi, ffl, æ, œ.
Line formers.—Brass rule bent in various shapes to aid in making curved lines of type.
Locking up.—Tightening up a form by means of quoins.
Logotypes.—The same as ligatures.
Long cross.—The bar that divides a chase the longest way.
Long pull.—When the bar is brought close to the cheek of a press.
Low case.—When the compositor has set almost all the letters out of his case.
Lower case.—The case containing the small letters of the alphabet, figures, points, &c.
Low-line.—Applied to a type that ranges lower than the rest in a line.