Definition: one or more of the thin thread-like parts that grow on a person's or animal's skin Level: B2
她发现枕头上有一根长长的头发。
She found a long ___hair on her pillow.
梳子上缠着一根头发。
There's a ___hair tangled in the comb.
他今天早上发现了他的第一根白头发。
He discovered his first gray ___hair this morning.
