The first three you listed are giving the Aramaic binyan of the example words, as you've already discovered in the "verbal_stem" reference you found. They say that the three words belong to pa'el, af'el and itp'il, respectively.
See Rabbi Yitzhak Frank's Aramaic grammar for all of those and a readable description of the rest of the language.
OK, I'm going to answer it myself, based on the comments above.
1 Strongs entry -> possibly multiple BDB entries
Apparently, because Hebrew words can be browsed by Strong's entry at concordances.org/hebrew, and each entry is linked to a BDB entry, then there is at most 1 BDB entry per Strong's entry, and the two are mapped (from Strongs to BDB) ...