laughing-gas

n [U] = nitrous oxide (nitrous).

latitudinal, latitudinarian, latrine, latter, latter-day, latterly, lattice, lattice window, laud, laudable, laudably, laudanum, laudatory, laugh, laugh at, laugh off, laugh over, laughable, laughably, laughing, laughing-stock, laughingly, laughter, launch, launch balloon, launch out, launching pad (also `launch pad), launder, launderette (also laundrette), laundress, laundromat, laundry, Laureate, laurel, lav, lava, lavatory, lavender, lavender-water, laver,