What is the Pointy Part of a Speech Bubble Called?

Given a speech bubble, what is the pointy part from which indicates the origin of the spoken word?

I'm assuming this is the same term for thought bubbles? If not what's the term for the origin of thought bubbles?

According to wikipedia, it's a tail:

... uses a bubble with a pointer, called a tail, directed towards the speaker.

Wikipedia

I can't find a definitive source, and Wikiepdia doesn't provide one. But it's used in the sites like this and elsewhere.

A common speech bubble is usually made up of a oval shape, with a tail at the bottom, indicating which person is the speaker.

There doesn't appear to be a distinction among the different versions of speech bubbles, so for a thought bubble, tail is still appropriate.