1. (informal) someone's favourite, especially a young person
   - fair-haired boy

Derived forms: blue-eyed boys

• radioactive iodine test
• radioactive iodine uptake test
• radioactive material
• radioactive tracer
• radioactive waste
• radioactively
• radioactivity
• radioactivity unit
• radiobiologist
• radiobiology
• radiocarbon
• radiocarbon dating
• radiocarpal joint
• radiochemist
• radiochemistry
• radiochlorine
• radiocommunication
• radioelement
• radiogram
• radiograph
• radiographer
• radiographic
• radiography
• radioimmunoassay
• radioisotope