The term you are looking for is "chaining" or "daisy-chaining."
Recent MacBook Pros since last year can daisy-chain 2-4 displays on a port:
MacBook Pro (15-inch, Late 2016) supports up to four Thunderbolt displays using Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapters or daisy-chaining. MacBook Pro (13-inch, Late 2016, Four Thunderbolt 3 Ports) and MacBook Pro (13-inch, Late 2016, Two Thunderbolt 3 Ports) support up to two Thunderbolt displays using Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapters and daisy-chaining.
And:
###Use one or more Thunderbolt Displays with your Mac
Use one or more Thunderbolt Displays with your Mac
Many Mac computers from 2011 and newer support at least one Thunderbolt Display. Below, find your specific model and how many Thunderbolt Displays it supports.
Read more on the official Apple page: About Thunderbolt ports and displays.
