Is it der, die or das Querflöte? – die Querflöte, plural die Querflöten

Why is it die Querflöte?

Querflöte ends in -e, and most nouns ending in -e are feminine: in a German dictionary, 79% of them take die.

Sense 1

die

[1] Music, woodwind instruments: a flute that is kept across when bubbles

[1] Musik, Holzblasinstrumente: eine Flöte, die beim Blasen quer gehalten wird

[1] Flute are often used in symphony orchestras
[1] Querflöten werden oft in Sinfonieorchestern eingesetzt.

[1] A flute is kept across the bubbles
[1] Eine Querflöte wird beim Blasen quer gehalten.

More source examples (1)

These dictionary examples can include historical and less common uses.

[1] "It was about the price of a small flute"
[1] „Es ging um den Preis einer kleinen Querflöte.“