“Transport Layer Security” really is a better name though. I also like to say “TLS”. Two Ses in a row makes you sound like a snake.
I think SSL is a better fit, actually. In theory TLS could be a transport-layer security mechanism that would let arbitrary protocols run on top of it (like IPSec does), but in practice it's pretty much tied up to TCP sockets. The UDP variant (DTLS, and I suppose QUIC) isn't part of the TLS spec for instance. Of course we have kernel TLS on Linux now, and Windows also has infrastructure like that, but it isn't as eas…
And that data-stream the interface that TLS provides; to the higher layers it looks like a transport layer.