WordNet sense 1 ((Maine colloquial) a temporary summer resident of Maine):

summercater

WordNet sense 2 (someone who engages in sports):

sportsman, sportswoman

WordNet sense 3 ((biology) an organism that has characteristics resulting from chromosomal alteration):

mutant, mutation, variation

WordNet sense 4 (verbal wit or mockery (often at another's expense but not to be taken seriously)):

fun, play

WordNet sense 5 (wear or display in an ostentatious or proud manner):

boast, feature

WordNet sense 6 (play boisterously):

cavort, disport, frisk, frolic, gambol, lark, rollick, romp, skylark, lark about

WordNet sense 7 (an active diversion requiring physical exertion and competition):

athletics