English

Noun

pegging ‎(countable and uncountable, plural peggings)

1. The activity of artificial climbing on crags and in quarries outside the main mountain areas.^[1]
2. The act of rectal penetration of a man by a woman wearing a strap-on ****.^[2]

Verb

pegging

1. present participle of peg

References

1. ↑
   1965, Alan Blackshaw, “Chapter 9. Artificial climbing ('pegging')”, in Mountaineering: From Hill Walking to Alpine Climbing, Penguin Books, page 248:

   This chapter describes the extra equipment and special techniques needed for artificial climbing. As noted in § 34, 2, this form of climbing has been developed in this country on limestone crags and gritstone quarries outside the main mountain areas.

2. ↑ The term was popularized when it became the winning entry in a contest in the "Savage Love" sex advice column in 2001.