I came across a sentence in Word by Word by Kory Stamper which was:
This complaint was an onion of suck, layer after layer of problems.
As the sentence is authored by a lexicographer, I hoped some dictionary would surely help me out. But most of the dictionaries seem to converge in this definition:
an act of sucking or drawing in
But I don't think I can figure out the word's meaning in that context using this definition. Help me out.