/ Dictionary / Index B baseliner: Meaning and Definition of Find definitions for: base•lin•er Pronunciation: (bās'lī"nur), [key] — n. Tennis. a player who typically plays near the baseline using ground strokes, as distinguished from one who typically goes to the net. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. baseline Basel-Land Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language