pantalon is a French word. It means 'trousers'.
The word "trousers" in French is spelled "pantalon."
The French word pantalon is masculine in gender. The masculine singular noun translates as "pants," "slacks" or "trousers" in English. The pronunciation will be "pah-ta-lo" in French.
un pantalon de ski
un pantalon de ski
If by pants you mean trousers then the word is un pantalon curiously the word is singular in french.
Trousers = un pantalon
le pantalon (sometimes 'les pantalons') means the pants in French.
Assuming you meant 'how do you spell pants in French' - the French word for pants is 'un pantalon'.
pipi dans le pantalon: Pee in pants.
Un pantalon (masc.) means a trouser in French. Porter un pantalon is "to wear trousers".
les pantalons (now acceptable also as a singular, le pantalon)
"Les trousers" is masculine in French. The word for "trousers" in French is "le pantalon," which is a masculine noun.