This is a charade - multiple separate word parts are joined together in sequence to form the final answer.
You need three parts: 'Jump' gives you the first part, 'about' needs to be interpreted as an abbreviation (think of a common short form meaning 'about' or 'approximately'), and 'inclination' gives you the final part. Put all three together in order.
Answer: SPRING-CLEANING | SPRING (jump) + C (circa - about) + LEANING (an inclination) = a type of thorough housework done seasonally