| anterior serratus muscle | (n) muscles that rotate the scapula and elevate the rib cage, Syn. serratus anterior, musculus serratus anterior, serratus magnus |
| posterior serratus muscle | (n) skeletal muscle that draws the rib cage backward and downward, Syn. serratus posterior, musculus serratus posterior |
| serratula | (n) genus of Old World perennial herbs with spirally arranged toothed leaves, Syn. genus Serratula |
| serratus | (n) any of several muscles of the trunk, Syn. serratus muscles |
| serratus posterior inferior | (n) a thin quadrilateral muscle at the junction of the thoracic and lumbar regions; acts to counteract the pull of the diaphragm on the ribs to which it is attached |
| serratus posterior superior | (n) a thin quadrilateral muscle of the upper and dorsal part of the thorax; acts to elevate the upper ribs |
| sawwort | (n) European perennial whose serrate leaves yield a yellow dye, Syn. Serratula tinctoria |
| serrated wrack | (n) brown algae seaweed with serrated edges, Syn. tang, Fucus serratus |