Slot filler is a term used in the field of linguistics to refer to a word or phrase that is used to fill a gap in a sentence. The three crossword solutions for this term are TAB (3 letters), COIN (4 letters), and RECRUITER (9 letters). TAB is an abbreviation for 'tabular arrangement, ' which is a type of formatting used to organize data into columns and rows. COIN is an acronym for 'computer-oriented information network, ' which is a type of computer network that allows users to access and share information. Finally, RECRUITER is a person who is responsible for finding and hiring new employees for a company.