Translation according to P. W. Joyce:
Togher, a causeway (vol. i. p. 374 [reproduced below]). Toghereen in Kildare, little causeway; dim. Toghergar in Galway; Tochar-gearr, short causeway.
In early ages, before the extension of cultivation and drainage, the roads through the country must have often been interrupted by bogs and morasses, which, when practicable, were made passable by causeways. They were variously constructed; but the materials were generally branches of trees, bushes, earth, and stones, placed in alternate layers, and trampled down till they were sufficiently firm; and they were called by the Irish name of tóchar. These tóchars were very common all over the country; our annals record the construction of many in early ages, and some of these are still traceable. They have given names to a number of townlands and villages, several of them called Togher, and many others containing the word in combination. Ballintogher, the town of the causeway, is a very usual name (but Ballintogher in Sligo appears to be a different name - see this in 2nd Vol.); and Templetogher (the church of the togher), in Galway was so called from a celebrated causeway across a bog, whose situation is still well known to the inhabitants.