Heap, rick, pile, stack. Mini hay-, harvest-related group. See Rangu.
Corner, nook, secluded or out-of-the-way place. Not out of the way at all, so maybe an old farm name.
Rake. Part of a harvest street-name group. Anagram of Rahe. See Vigla. The rake plays a mystical role in various Estonian creation stories (see Kalevipoja, Canto IV)...
1) One of the vertical stakes in the back of a farm cart holding the sides in place; 2) Hay or corn stacked on a triangular or A-shaped rack, the rack itself. Given its immediate neighbors, Kubu, Vihu, etc., probably the latter, but it is not without the realms of possibility that during the muddy 1840s the same wood may have served for both, such as a present-day USB key can be adroitly used to keep a window ajar.