Dear Faldage: I found a site you might like:
http://www.searchgodsword.org/lex/grk/view.cgi?number=1401
Doulos

doo'-los
Parts of Speech
TDNT

Noun

2:261,182
Definition

1.a slave, bondman, man of servile condition
a.a slave
b.metaph., one who gives himself up to
another's will those whose service is used
by Christ in extending and advancing his
cause among men
c.devoted to another to the disregard of
one's own interests
2.a servant, attendant

But when I searched that site for "loudos" it could not find it. I wonder if site where I found
"loudos" made an error?