Retractable knuckle Synonyms

We can't find synonyms for the phrase "Retractable knuckle", but we have synonyms for terms, you can combine them.

Retractable Synonyms

Knuckle Synonyms

RK abbreviation

RK is an abbreviation for Retractable Knuckle
What does RK stand for?
RK stands for "Retractable Knuckle"

Definitions for Retractable


  • (adjective) capable of being retracted

Definitions for Knuckle


  • (noun) a joint of a finger when the fist is closed
  • (verb) press or rub with the knuckles
  • (verb) shoot a marble while keeping one's knuckles on the ground