Other forms: parasols
A parasol is a little umbrella that protects you from the sun. If you are trying to imitate a fancy Victorian lady, get yourself a parasol.
An umbrella is a collapsible shade that people use to keep from getting wet in the rain or burned in the sun. A similar device is a parasol. Parasols are smaller than umbrellas, so they're not as useful in the rain. However, many people, especially on the beach, use parasols to keep the sun from beating down on them. If you don't want a sunburn, a parasol is handy.