Concise definition
Pegging
Pegging is strap-on anal penetration, usually involving a harness and dildo, and often explored as a way to play with trust, role reversal, or a different kind of sensation-focused intimacy between consenting adults.
Also known or searched as: strap-on sex, strap-on pegging
This Lexicon entry defines the term without assuming interest, readiness, experience, or consent.