- a lower-case letter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for small letter
On the other hand, Small-Letter forms were frequently written larger and used as initials.
The Roman Small-Letter is the universally recognised type in which the majority of books and papers are printed.
The sequence is as follows: Prints with c, d, or x in any finger other than the index fingers constitute the small-letter group.
Most intricate of all the individual sequences is the small-letter sequence.