What does it mean to identify the main poetic technique in a poem

At its most basic, a poetic device is a deliberate use of words, phrases, sounds, and even shapes to convey meaning. ... Like the metaphor I used in the last paragraph, poetic devices infuse literal meanings (what words actually say) with figurative meanings (implications, unexpected connotations, and so on)

Explanation:i poetic technique is the same thing as a poetic device

y j jh kftj yyhjk ufyj tj nyk,u   sewae h

huck's relationship with food is a prominent theme throughout the novel, and during his time on jackson's island and working his way down river, huck revels in and enjoys his ad hoc dining. in the first chapter, we observe huck is ironically trapped in a "civilized" world, when he would prefer to live freely in nature.