IPA: /ˈdæbstər/
KK: /ˈdæbstər/
A person who is skilled or proficient in a particular area or activity, often implying expertise or mastery.
He is a dabster at fixing old cars, always bringing them back to life.
Dabster originates from the word 'dab' (from Middle English 'dabben', meaning to touch lightly or to dab) combined with the suffix '-ster' (meaning a person who). A dabster is a person who is skilled or proficient at something, particularly in a light or casual manner.
Think of someone who 'touches lightly' ('dab') and is a 'person' ('-ster') skilled at it — that's why a dabster is someone skilled in a particular area.