(1) When you get an email or LinkedIn message from a recruiter who implies he/she is retained by a company to recruit for a job, but in fact he/she is submitting unsolicited candidates for a role.
(2) The opposite of an in-house recruiter / retained search.
Out-house recruiter: "Hi, I'm writing since you'd be great for an analyst role I'm trying to fill." Me: "Is this a retained search?" Out-house recruiter: "No." Me: "No thanks" and then I recommend a colleague I hate and I hope will take a different job, if by some miracle the out-house recruiter is able to place the candidate.