KanjiJLPT N2
Stretch

counter for bows & stringed instruments, stretch, spread, put up (tent)

Mnemonic

You grip a bow and draw the string back in one long, slow pull. Every sinew in your arm begins to stretch — the wood groans, the string hums with tension, pulled so taut it could snap at any moment.
Additional thoughts
Feel the physical sensation: arms trembling, bow bending, string stretching longer and longer. Bow + Long = Stretch. The longer you draw, the more everything stretches.
Quick recall
Drawing a bow back in one long pull makes everything stretch taut.

Details

The keyword for 張 is stretch. This kanji conveys the idea of pulling something taut, expanding, or extending outward. It encompasses meanings such as stretching a surface tight (like a tent or drum skin), spreading out, or asserting oneself firmly. It can also refer to tension, straining, or the act of setting something up by pulling it into place.
On'yomi
ちょう
Kun'yomi
は.る、-は.り、-ば.り