1an astringent liquid applied to the skin to reduce oiliness and improve its condition:if your skin is oily, use a gentle toner [mass noun]:cleanse your face and take off any residue with toner
2a device or exercise for making a specified part of the body firmer and stronger:a tummy toner
3a black or coloured powder used in xerographic copying processes:a high-definition toner for colour photocopying machines [mass noun]:the printer needs paper or toner [as modifier]:the toner cartridge
[usually with adjective or noun modifier] a chemical bath for changing the colour or shade of a photographic print, especially as specified:sepia or blue toners
