小時

hour / CL:個|个[ge4]

small / tiny / few / young

o'clock / time / when / hour / season / period

in one's childhood

half hour

credit hour (in an academic credit system) / see also 學分制|学分制[xue2 fen1 zhi4]

ampere-hour (Ah)

being bright at an early age does not necessarily bring success upon growing up (proverb)

erhua variant of 小時候|小时候[xiao3 shi2 hou5]

hourly worker / hourly job

several hours

eight-hour working day