n Any of various card games that can be played by one person.
n A game for one person, played on a board with pegs or balls, in which the object is, beginning with all the places filled except one, to remove all but one of the pieces by "jumping", as in draughts.
n An extinct bird formerly believed to be related to the dodo, more precisely Réunion solitaire, (taxlink|Raphus solitarius|species), now preferably Réunion ibis, (taxlink|Threskiornis solitarius|species).