ink sac

English

Etymology

ink +‎ sac

Noun

ink sac (plural ink sacs)

1. (zoology) A muscular bag found in certain cephalopods used to generate ink.
   • 2017, Mark Carnall, The Guardian, 9 August:

     The ink sac feeds into the rectum, controlled by a sphincter and in some inking events mucus from another organ, the funnel organ is ejected with water and ink through the anus and the siphon to create a cloud of ink.

Anagrams

• incask