The ordinal number of one hundred five in counting order(adjective)
WordNet. Princeton University. 2010.
Use "105th" in a sentence
"Haussler, who collected his first Tour stage victory, entered the stage in 105th place overall — 55: 24 behind Nocentini."
"U.S. Olympic Hopeful Preps for Millrose Mile Jenny Simpson, the reigning world champion in the 1,500 meters, will launch her quest for Olympic gold by taking on Upper Manhattan when she runs the metric mile at the 105th Millrose Games next month."
"A law-enforcement official with knowledge of the case said Mr. Forde was tracked down by the Violent Fugitive Squad of the 105th Precinct and arrested Saturday."