The character 陆 (Lù) is a common Chinese surname. It also has the meaning of "land" or "continent" as a common noun, but when capitalized or used in context with personal names, it functions as a family name.
陆老师是我们学校最受欢迎的数学老师。
lù lǎo shī shì wǒ men xué xiào zuì shòu huān yíng de shù xué lǎo shī.
Teacher Lu is the most popular math teacher at our school.
小陆,这个周末你有空一起吃饭吗?
xiǎo lù, zhè gè zhōu mò nǐ yǒu kòng yī qǐ chī fàn ma?
Xiao Lu, are you free to have dinner together this weekend?
陆先生已经在会议室等你了。
lù xiān shēng yǐ jīng zài huì yì shì děng nǐ le.
Mr. Lu is already waiting for you in the conference room.