bur·then 
(bûrthən)
(bûrthən)n.
A burden.
- workhorse
- workhouse
- work in
- working
- working capital
- working class
- working-class
- working control
- working day
- working dog
- working fluid
- working girl
- workingman
- working memory
- working papers
- working substance
- workingwoman
- work in progress
- work into
- work like a charm
- workload
- workman
- workmanlike
- workmanship
- workmen's compensation