Players Try to Line Up Tokens in __ Four
Puzzle 19 of Millennial Words Hard Pack
Question is: Players Try to Line Up Tokens in __ Four
and the answer is: CONNECT
Word Meaning:
CONNECT — (intransitive, of an object) To join (to another object): to attach, or to be intended to attach or capable of attaching, to another object.
Definitions from Wiktionary.