1. (golf) the long iron with the most nearly vertical face
   - one iron

Derived forms: driving irons

Type of: iron

• thermalise
• thermalize
• thermally
• thermel
• thermic
• thermic fever
• Thermidor
• thermion
• thermionic
• thermionic current
• thermionic emission
• thermionic tube
• thermionic vacuum tube
• thermionic valve
• thermionics
• thermistor
• thermo-
• thermoacidophile
• thermobaric bomb
• Thermobia
• Thermobia domestica
• thermocautery
• thermochemical
• thermochemistry
• thermocline