Metal Clasp That Fastens a Shirt Sleeve
This page is the CodyCross answer for the clue below from Physics, Group 1890, Puzzle 2 (Hall Effect Sensor).
Question is: Metal Clasp That Fastens a Shirt Sleeve
and the answer is: CUFFLINK
Word Meaning:
CUFFLINK — A button or stud used to hold a sleeve cuff together.
Definitions from Wiktionary.