phenobarbital/feenohʹbahbit(ə)l/ noun

• oregano
• or else
• orfe
• org.
• organ
• organ-
• organa
• organdie
• organelle
• organ-grinder
• organic
• organisation
• organise
• organism
• organist
• organization
• organize
• organo-
• organoleptic
• organon
• organophosphate
• organum
• organza
• organzine
• orgasm