HUAN-1

The Pinyin 'h' does not sound like the 'h' in 'house', but like the 'ch' in Scottish 'loch' or the German 'ich'.

欢 = merry

A combination of the character 又 = you(4), meaning 'again', and the character 欠 = qian(4), which has the two unrelated verbal meanings 'to yawn' and 'to owe'. 

欢 is mostly encountered as the first character in:

欢迎 = huan(1)ying(2) = welcome, lit. merry greet

迎 = ying(2) = to greet, against (two entirely different meanings to the same charater, spoken in the same tone)

欢迎光临 = huan(1)ying(2) guang(1)lin(2) = welcome the presence of guests

光临 = guang(1)lin(2) =  presence of guests, lit. light be present

Both 光 and 临 have, as always with Chinese characters, many more meanings, but 'light' and 'be present' are the cores.

Even though 欢迎光临 may sound somewhat unhandy, it is the standard phrase with which people are welcomed. Even supermarket cashiers will often use this full version with every customer.