trek

from The American Heritage® Dictionary of the English Language, 5th Edition.

• intransitive verb To make a slow or arduous journey.
• intransitive verb To journey on foot, especially to hike through mountainous areas.
• intransitive verb South African To travel by ox wagon.
• noun A journey or leg of a journey, especially when slow or difficult.
• noun South African A journey by ox wagon, especially a migration such as that of the Boers from 1835 to 1837.

from The Century Dictionary.

• noun In South Africa, the action of drawing, as a vehicle or a load; draft; traction; hence, a journey or migration; the distance between one stopping-place and the next; travel: as, that was short trek.
• In South Africa:
• To draw a vehicle, as oxen; pull a load along.
• To travel by ox-wagon; hence, to travel in general; go from place to place; migrate.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb To draw or haul a load, as oxen.
• intransitive verb Chiefly South Africa To travel, esp. by ox wagon; to go from place to place; to migrate.
• noun Chiefly South Africa The act of trekking; a drawing or a traveling; a journey; a migration.
• noun the great emigration of Boers from Cape Colony which began in 1836, and resulted in the founding of the South African Republic and Orange Free State.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A slow or difficult journey.
• noun South Africa A journey by ox wagon, especially the Boer migration of 1835-7.
• verb intransitive To make a slow or arduous journey.
• verb intransitive To journey on foot, especially to hike through mountainous areas.
• verb South Africa To travel by ox wagon.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a journey by ox wagon (especially an organized migration by a group of settlers)
• noun any long and difficult trip
• verb journey on foot, especially in the mountains
• verb make a long and difficult journey