man Friday noun [C]

a male assistant who does many different kinds of work ⇨ GIRL FRIDAY NOTE The name comes from a character in Daniel Defoe's novel Robinson Crusoe who is rescued by Crusoe and works for him.

• OHP
• OHT
• oil
• oilfield
• oilman
• oil platform
• oil rig
• oil well
• OJT
• OL
• Old Economy
• old-line
• oligarchy
• oligopoly
• O&M
• OM
• ombudsman
• one-man business
• one-of-a-kind
• one-off
• one-size-fits-all
• one-stop
• one-time
• one-time-only
• one-to-one