Webster's Revised Unabridged Dictionary · 1913

Tribulation

Tribulation , noun

[Old English tribulacium, French tribulation, Latin tribulatio, from tribulare to press, afflict, from tribulum a thrashing sledge, akin to terere, tritum, to rub. See Trite.]

That which occasions distress, trouble, or vexation; severe affliction.
When tribulation or persecution ariseth because of the word, by and by he is offended. — Matt. xiii. 21
In the world ye shall have tribulation. — John. xvi. 33