Meaning:1 to stand 2 to stand up 3 upon smth. (preverb)
Comments: PAT *gǝ-la- (*-la- is a locative verbal root indicating direction of action). PAK *ta-ǵǝ- (the meaning of the first component is not quite clear - see Шагиров 2, 69 on its possible etymology).
In Ub. the preverb ǵǝ- is used to indicate that the action is taking place on surface of smth. (ǵǝ-s- 'sit upon smth.', ǵǝ-tʷ- 'be upon smth.' etc.). There are reasons to think that the root *gǝ had had this function already in PWC (cf. the common WC compound *gA-LA- 'to fall (from above, from the surface) q.v.).