And then the Milliner — and the Man
Of the Appalling Trade —
To take the measure of the House —
There'll be that Dark Parade —

Meaning: What you might not know—but Dickinson probably did—is that "appalling" comes from the Latin word for "to make pale," as the undertaker was responsible for preparing the body right there in the home.

Could anyone please show me what is the concept or meaning of the italic part?

([Source][1]) [1]: http://www.shmoop.com/theres-been-a-death-in-the-opposite-house/stanzas-5-6-summary.html

And then the Milliner — and the Man
Of the Appalling Trade —
To take the measure of the House —
There'll be that Dark Parade —

Meaning: What you might not know—but Dickinson probably did—is that "appalling" comes from the Latin word for "to make pale," as the undertaker was responsible for preparing the body right there in the home.

Could anyone please show me what is the concept or meaning of the italic part?

(Source)

And then the Milliner — and the Man
Of the Appalling Trade —
To take the measure of the House —
There'll be that Dark Parade —

Meaning: What you might not know—but Dickinson probably did—is that "appalling" comes from the Latin word for "to make pale," as the undertaker was responsible for preparing the body right there in the home.

Could anyone please show me what is the concept or meaning of the italic part?

([Source][1]) [1]: http://www.shmoop.com/theres-been-a-death-in-the-opposite-house/stanzas-5-6-summary.html

And then the Milliner — and the Man
Of the Appalling Trade —
To take the measure of the House —
There'll be that Dark Parade —

Meaning: What you might not know—but Dickinson probably did—is that "appalling" comes from the Latin word for "to make pale," as the undertaker was responsible for preparing the body right there in the home.

Could anyone please show me what is the concept or meaning of the italic part?

([Source][1]) [1]: http://www.shmoop.com/theres-been-a-death-in-the-opposite-house/stanzas-5-6-summary.html