A Sequence of Related Ideas: "train of __"

This page is the CodyCross answer for the clue below from Daily Routines, Group 1842, Puzzle 5 (Read Headlines).

Question is: A Sequence of Related Ideas: "train of __"

and the answer is: THOUGHT

Word Meaning:

THOUGHT — (countable) A representation created in the mind without the use of one's faculties of vision, sound, smell, touch, or taste; an instance of thinking.

Definitions from Wiktionary.

A sequence of related ideas: "train of __" — CodyCross Answer | CodyCross Solutions