This is GAO. I did this for a friend but thought I'ld share it here too!
Gao means high or tall and some scholars think the seal script form shows a tower or multistorey pavilion.
It's a character simple elegant and easy to remember and also interesting from a historical linguistics viewpoint since its one of those words with cognates in several languages that seem to derive from a Eurasiatic protolanguage. Yes Gao once spelt KAO may be related to HIGH and height.
How well a lot of Western and Germanic and Englsih words that start with H come from words that were centuries or millenia ago pronounced with an initial K. K tends to soften to a H.
A similar phonological change is why some Chinese words like HAN ZI are KANJI in SinoJapanese.
