A. = Adjective ADV. = Adverb IDM. = Idiom N. = Noun V. = Verb | |
| altitude sickness | N. an illness caused from being at high elevations |
| a canteen | N. a container used for carrying drinking water |
| dehydration | N. a physical condition caused by not drinking enough water; having the water removed from something |
| gear | N. equipment used for a particular purpose (camping, sports, fishing, etc.) |
| to hike | V. to go on a walk through nature for pleasure or exercise |
| a hike | N. a walk through nature for pleasure or exercise |
| a permit | N. written permission from a government office or other organization to do something |
| a porter | N. a person who carries gear and supplies on a trek |
| a ranger | N. a person who is employed to take care of a state park or a national park |
| a trail | N. a path (through forest, grass, sand) created when many people or animals walk back and forth over the same area Marked paths in natural parks and reserves are usually called trails. |
| to trek | V. to travel by foot over a great distance |
| a trek | N. a journey over a great distance We often use the word "trek" when a trip lasts several days and is quite challenging. |
