A single tentacle, if you will, of a monster that's spreading through the galaxy.

There wasn't a single tentacle or hell portal to be found.

A single tentacle took one casual swing at it and knocked it out of the air.

However, single tentacles are seen later in the game.

The Cimmerian was now held by a single tentacle, looped about his foot.

A maximum of 20 such swellings may occur on any single tentacle.

A single tentacle extended, and its end turned up.

He knew it was useless to shoot at the single tentacle dangling close before his eyes.

A long silence ensued while Tor sent a single tentacle into the control console.

They do this for the whole colony, spreading their single long tentacles in the water to snare prey.