intercostal UK /ˌɪn.təˈkɒs.təl/US /ˌɪn.tɚˈkɔ.stəl/noun 3adjective 2forms 1 noun3 •Any of the intercostal muscles. •Something that is between the ribs of an animal. •Hull reinforcing inserted between frames or bulkheads of a boat. adjective2 •Between the ribs of an animal or person. •Between the ribs of a boat. formsintercostals
