Where does “tribulandus” come from?

tribulandus (Latin) comes from Latin tribulo, from Latin trībulum, from Latin -bulum, from Proto-Indo-European -dʰlom — Alternative form of *-trom; instrumental suffix;...

Definitions

Ancestry of “tribulandus”, step by step

Step	Language	Word	Meaning
1	Latin	tribulo	I press, squeeze, extract; dative singular of...
2	Latin	trībulum	threshing board, threshing sledge
3	Latin	-bulum
4	Proto-Indo-European	-dʰlom	Alternative form of *-trom; instrumental suffix;...

Every word from Proto-Indo-European -dʰlom →Every word from Latin -bulum →Every word from Latin trībulum →