latchkey child

(becoming dated 渐旧) child who has to let himself into his house or flat and look after himself, esp after returning from school, because both parents are out at work 挂钥匙的儿童（尤指因父母外出工作, 故放学回家需自行进屋的）.

lasagne (also lasagna), Lascar, lascivious, lasciviously, lasciviousness, laser, lash, lashing, lass, lassitude, lasso, last, last but not least, last name, last will and testament, lasting, lastly, lat, latch, latchkey, late, latecomer, lately, latency, latent, latent heat, latent image, latent period, later, lateral, lateral thinking, laterite, latest, latex, lath, lathe, lather, Latin, Latin America, Latin cross,