The Hebrew word for chain (Biblical as well as Modern) is שַׁרְשֶׁרֶת listen and repeat. Say it out loud a few times.
As a chain is a string of connected loops (לוּלָאוֹת listen and repeat), the word שרשרת itself conveys a sense of pieces being connected to one another - with two instances of שׁר joined in the word - in a flexible manner with the soothing, flowing sh sound.
The word in context:
הִתְחַלְתִּי לְקַבֵּל מִכְתַב שַׁרְשֶׁרֶת אֶלֶקְטְרוֹנִי.
I started receiving an electronic letter chain.
שרשרת can also refer to the chain people wear around their necks - a necklace.
בַּחֲנוּת הַתַּכְשִׁיטִים בַּטַּיֶּלֶת מוֹכְרִים שַׁרְשְׁרָאוֹת יָפוֹת.
At the jewelry shop on the boardwalk they're selling nice necklaces.