Well . Frumpy means dowdy and old-fashioned. So basically it's someone who wears old fashioned non modern clothes . And 'get lumped with' could mean like getting given alot of work to do . It has 2 meanings : 1. put in an indiscriminate mass or group; treat as alike without regard for particulars. 2 : carry (a heavy load) somewhere with difficulty.

well I'm not entirely sure but this site may help :) : http://www.npr.org/2011/05/30/136796448/has-run-run-amok-it-has-645-meanings-so-far

For example, 'run a nursery'

How many meanings has 'run' got?