Narrow Glass Vessel Used to Heat Chemicals in Labs
Puzzle 1 of Words that Rhyme Piece of Cake Pack
Question is: Narrow Glass Vessel Used to Heat Chemicals in Labs
and the answer is: TESTTUBE
Word Meaning:
TEST TUBE — (chemistry) A glass tube, rounded at one end and open at the other, used for small-scale laboratory tests.
Definitions from Wiktionary.