/sleɪv ||; slev/noun [C] (in past times) a person who was owned by another person and had to work for him/her (旧时)奴隶 ➔slaverynoun [U]: the abolition of slavery in America美国奴隶制度的废除
slave²
/sleɪv ||; slev/verb [I] slave (away) to work very hard 刻苦工作;苦干