needlefishnoun (pl needlefishes collectively needlefish)

• ordinate
• ordination
• ordnance
• ordnance datum
• Ordnance Survey
• ordonnance
• Ordovician
• ordure
• ore
• oread
• Oreg
• oregano
• or else
• orfe
• org.
• organ
• organ-
• organa
• organdie
• organelle
• organ-grinder
• organic
• organisation
• organise
• organism