"a Chain Is Only as Strong as Its __ Link"
This page is the CodyCross answer for the clue below from TV Station, Group 603, Puzzle 4 (Simulcast Service).
Question is: "a Chain Is Only as Strong as Its __ Link"
and the answer is: WEAKEST
Word Meaning:
WEAKEST — Superlative form of weak: most weak.
Definitions from Wiktionary.