NOUN (3)

1. someone who descends;

2. a lowercase letter that has a part extending below other lowercase letters;

3. (printing) the part of lowercase letters that extends below the other lowercase letters;

The Collaborative International Dictionary of English v.0.48:

Descender \De*scend"er\, n.
   One who descends.
   [1913 Webster]

WordNet (r) 3.0 (2006):

descender
    n 1: someone who descends
    2: a lowercase letter that has a part extending below other
       lowercase letters
    3: (printing) the part of lowercase letters that extends below
       the other lowercase letters

The Free On-line Dictionary of Computing (19 January 2023):

descender

    A lowercase letter that extends below the base line,
   such as "g", "j", or "p".  Also used to denote the part of the
   letter extending below the base line.  Compare ascender.

   (1998-03-27)