How to spell THINCKBACK correctly?

If the intended word is "thin back", some suggestions for correcting the misspelling "thinckback" could be to separate the word into two distinct words or to replace the incorrect "ck" with the correct "k" for "thin" and "back". Another possibility is that the intended word may be "thick back", in which case the misspelling would need to be corrected to use the letter "k" in "thick."