bolt-ons

Noun

bolt-on (plural bolt-ons)

1. (also, figuratively) An accessory that can be bolted on or otherwise attached.
   • Some guitars have the neck glued to the body (Les Pauls), some are bolted on (Fenders), and in some the neck is part of one piece of wood that extends through the body (Jackson). The theory of the neck through the body design is that if the pickups, bridge, and the strings (from tuners to...1988, Michael Ross, “The Electric Guitar as an Acoustic Instrument”, in Getting Great Guitar Sounds: A Non-technical Approach to Shaping Your Personal Sound, Milwaukee, Wis.: Hal Leonard Books...
2. (figuratively) A functionality or service that can be added to an existing arrangement or plan (for example, a mobile telephone subscription).
   • [I]f an innovation has reached the maturity stage of the product life-cycle, then perhaps its functionality will be developed to provide a ‘bolt-on’, with the core of the innovation remaining essentially the same. A classic example of a sustained innovation is the mobile phone, where functionality...2009, Simran K. Grewal, Lisa Harris, “Learning Virtually or Virtually Distracted?: The Impact of Emerging Internet Technologies on Pedagogical Practice”, in Niki Panteli, editor, Virtual Social...
3. (plural, slang) A breast implant.

See all 5 meanings of bolt-on