line. 1  linea alÂ´ba white line; the tendinous median line on the anterior abdominal wall between the two rectus muscles. 2  liÂ´neae albicanÂ´tes white or colorless lines on the abdomen, breasts, or thighs caused by mechanical stretching of the skin, with weakening of the elastic tissue; see also atrophic striae.
underwrite. v. 1) to agree to pay an obligation which may arise from an insurance policy. 2) to guarantee purchase of all shares of stock or bonds being issued by a corporation, including an agreement to purchase by the underwriter if the public does not buy all the shares or bonds.
verb (used with object), underlay, underlain, underlying. 1. to lie under or beneath; be situated under. 2. to be at the basis of; form the foundation of. 3. Grammar. to function as the root morpheme or original or basic form of (a derived form): The form âboyâ underlies âboyish.â.