轴

axis; axle; spool (for thread); roller (for scrolls); classifier for calligraphy rolls etc

9 strokes Dict coverage rank #1,156 U+8F74

Phono-semantic compound (形声字)

车 (semantic, “wheel”) + 由 (phonetic, yóu)

components: 车由

axle · Heisig RSH #2169

车 car + sprout

Keyword method from Heisig's Remembering Simplified Hanzi.

Phonetic series: characters sharing the sound component 由

Siblings built with the same phonetic component 由 (yóu) — compare how they read:

Character	Pinyin	Meaning
由 sound component	yóu	cause, reason; from
油	yóu	oil, fat, grease, lard; oil paints
抽	chōu	to draw out, to pull out; to sprout
邮	yóu	mail; post office
袖	xiù	sleeve
宙	zhòu	space, time, space-time
鼬	yòu	weasel, mustela itatis
铀	yóu	uranium
釉	yòu	enamel, glaze
岫	xiù	mountain peak; cave, cavern
柚	yòu	grapefruit, pomelo
蚰	yóu	millipede
妯	zhóu	sister-in law
舳	zhú	the stern of a ship

Word	Pinyin	Meaning
轴心国	Zhóu xīn guó	Axis powers (World War II)
水平轴	shuǐ píng zhóu	horizontal shaft; horizontal axis (math.)
中轴线	zhōng zhóu xiàn	central axis (line)
后车轴	hòu chē zhóu	back axle (of car)
转轴儿	zhuàn zhóu r	erhua variant of 轉軸\|转轴[zhuan4 zhou2]
自转轴	zì zhuàn zhóu	axis of rotation
转动轴	zhuàn dòng zhóu	axis of rotation (mechanics); spindle
传动轴	chuán dòng zhóu	drive shaft
车轴草	chē zhóu cǎo	honewort; Cryptotaenia japonica
半长轴	bàn cháng zhóu	semiaxis; radius
时间轴	shí jiān zhóu	time axis; timeline
联轴器	lián zhòu qì	(mechanics) coupler; coupling
正半轴	zhèng bàn zhóu	positive semiaxis (in coordinate geometry)
连轴转	lián zhóu zhuàn	(coll.) to work non-stop; to work around the clock
联轴节	lián zhòu jié	(mechanics) coupling
中轴	zhōng zhóu	axis; (bicycle) bottom bracket
心轴	xīn zhóu	central axis; spindle
轴心	zhóu xīn	axle; (fig.) central element; key element; axis (alliance of nations)
地轴	dì zhóu	the earth's axis
机轴	jī zhóu	arbor; shaft (in a machine)