From Longman Dictionary of Contemporary Englishpeg somebody/something as something phrasal verbTHINK/HAVE THE OPINION THATto believe or say that someone has a particular type of character, or that a situation has particular qualities I’d had him pegged as a troublemaker. → peg→ See Verb table
Examples from the Corpus
peg as • Initial reports pegged the crime as drug-related.• Martin decided to abseil from the peg but as he leant back it came out.• Upper and sole unit were then bonded together, not stitched and pegged, as in traditional boot construction.• The team who draws peg one will be responsible for weighing in their section, with peg two assisting as section stewards.• They spoke of witnesses being coerced into changing their testimony to peg Simpson as the culprit.had ... pegged as• He already had her pegged as the enemy. 