Nematocyst n. : A lasso cell, or thread cell. See Lasso cell, under Lasso.

Example:


Taxonomy
cnidocyte, nematocyst, cell, cnidarians, nematocysts, natural prey, capsule, box jellyfish, stings, cnidocytes, humans, toxicon, venom, free encyclopedia, proteins, sea anemones, cnidocyst, trigger.

Defination from the web:
nematocyst. ... After penetration, the toxic content of the nematocyst is injected into the target organism. ...