The Collaborative International Dictionary of English v.0.48:

Stroller \Stroll"er\, n.
   One who strolls; a vagrant.
   [1913 Webster]

WordNet (r) 3.0 (2006):

stroller
    n 1: someone who walks at a leisurely pace [syn: saunterer,
         stroller, ambler]
    2: a small vehicle with four wheels in which a baby or child is
       pushed around [syn: baby buggy, baby carriage,
       carriage, perambulator, pram, stroller, go-cart,
       pushchair, pusher]

Moby Thesaurus II by Grady Ward, 1.0:

81 Moby Thesaurus words for "stroller":
   Ahasuerus, Ancient Mariner, Argonaut, Flying Dutchman, Goliard,
   Odysseus, Oisin, Ossian, Roscius, Ulysses, actor, actress,
   antagonist, baby buggy, baby carriage, bad guy, barnstormer,
   bird of passage, character, character actor, character man,
   character woman, child actor, diseur, diseuse, dramatizer, drifter,
   feeder, floater, foil, gad, gadabout, go-about, gocart, heavy,
   histrio, histrion, ingenue, itinerant, juvenile, matinee idol,
   mime, mimer, mimic, monologist, mover, mummer, pantomime,
   pantomimist, perambulator, peregrinator, peregrine, peripatetic,
   playactor, player, pram, protean actor, rambler, reciter, roamer,
   rolling stone, rover, runabout, soubrette, stage performer,
   stage player, stooge, straggler, straight man, strolling player,
   theatrical, thespian, troubadour, trouper, utility man, villain,
   visitant, walker, wanderer, wandering minstrel,
   wandering scholar