It is the name of a city in Costa Rica in the Province of Guanacaste. Name of a canton in Costa Rica and a district in the Province of Guanacaste in Costa Rica. Name of a mountain range in that same region.
Cordillera, district and canton in the province of Guanacaste ( Costa Rica ) . [Note: the verb tilar does not exist as such, but as JOHN says the Spanish does recognize tillar ("to establish a floor") beyond its nautical origin of Latin (or French, or Germanic) etymology. ]
TILARÁN 3a . Pers. pl. of the verb TILAR . It seems rather a mistake by TILLAR which means to make a floor, a parquet, and especially a tiling (de tile, badosa in English) Some synonyms, words or similar expressions can be to emballdozar