Do clicks in Khoisan languages have special meanings?

No, clicks in Khoisan languages do not have special meanings. While their unique and exotic nature has historically invited speculation that they might be associated with special symbolic or environmental meanings, this is not the case.12

In reality, clicks function as normal consonants within the language systems, serving a linguistic role that is as unremarkable as the function of more familiar sounds like "b" or "s" in other languages. Although some instances of sound symbolism exist—such as a word containing a click to mimic the sound of an eland's knee joints—these are exceptions rather than the rule. In all click languages, these sounds are simply used to form the vocabulary and structure of the language, appearing as the initial sound in approximately 70 percent of words in Khoisan languages.213