Other forms: winkles
To winkle is to get something out with difficulty and patience. Winkle it out, winkle out the truth, winkle him out.
It nearly always takes out, and the patience is the point — winkling is extracting something reluctant bit by bit. The image is the shellfish: a winkle is picked out of its shell with a pin, which is fiddly and slow, and that is exactly where the verb comes from.
1verbwinkleTo get something out with difficulty and patience.
“It took me an hour to winkle the truth out of my son about the broken window.”
winkle is a patient extracting.
w-INK-le → working the last INK out
You work the last of the ink out of the pen, slowly, and in the end it comes.
hooks ontoink
an ellipsis of periwinkle.
Etymology from Wiktionary, CC BY-SA