The crossword solution for the term 'APPLY WITH A SWAB' is DAB, which stands for 'dabbing'. Dabbing is a method of applying a liquid or semi-solid substance to a surface using a swab. This technique is commonly used in medical settings to apply medication or disinfectant to a wound or other area of the body. It can also be used to apply paint, glue, or other substances in a variety of contexts.