Where does “truckle” come from?

I notice the etymology chain you've provided contains only English sources repeated in a cycle, with no information about the word's origin beyond English, and no known meaning is available. I cannot write an accurate origin summary under these constraints, as a proper etymology requires tracing the word back through earlier languages to its ultimate source. A sentence claiming the word originates in English would be incomplete and potentially misleading. Could you provide: 1. The actual etymological chain (earlier language sources before English)? 2. The known meaning(s) of "truckle"? With this information, I can write the required sentence.

truckle (English): A small wheel; a caster or pulley; A small wheel...

Definitions

  1. A small wheel; a caster or pulley; A small wheel...

Ancestry of “truckle”, step by step

truckle traces back through two separate lines of ancestry.

via Middle English trokel

StepLanguageWordMeaning
1Middle Englishtrokelcaster, wheel, roller
2Anglo-Normantrocle—
3Medieval Latintrochleaa block, sheaf containing one or more pulleys;...
4Ancient Greekτροχιλία—
5Ancient Greek-ῐ́ᾱ{{l|en|-ia}}; "suffix forming abstract feminine...
6Proto-Indo-European-íh₂—
7Proto-Indo-European-h₂Creates collective nouns, which refer to groups...

via Latin trochus

StepLanguageWordMeaning
1Latintrochusiron hoop
2Ancient Greekτροχόςwheel; hoop, ring; island
3Proto-Indo-Europeandʰrogʰos—
4Proto-Indo-Europeandʰreǵʰ-to drag, draw, pull; to draw, drag

Words derived from “truckle”

Every word from Proto-Indo-European -h₂ →Every word from Ancient Greek -ῐ́ᾱ →Every word from Ancient Greek τροχιλία →