verb. ['ˈflɛks'] contract.
noun. ['ˈflɛks'] the act of flexing.
verb. ['ˈflɛks'] cause (a plastic object) to assume a crooked or angular form.
verb. ['ˈflɛks'] bend a joint.
verb. ['ˈflɛks'] form a curve.
verb. ['ˈflɛks'] exhibit the strength of.