slackener

English

Etymology

From slacken +‎ -er.

Noun

slackener (plural slackeners)

  1. One who slackens.
    • 1902, Anne Macdonell, Sons of Francis, page 391:
      His only reference to the envoy who had denounced him is in respect of his conduct when Minister-General of the Franciscans as slackener of the Rule.
  2. Part of a loom that slackens the threads.