(tr, adverb) to extract (information) with difficulty
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Lure out, obtain or extract with effort, as in We had a hard time teasing the wedding date out of him. This term alludes to the literal sense of tease, “untangle or release something with a pointed tool.” [Mid-1900s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.