Segreant. A term applied to a griffin when rampant.
Sejant. Sitting.
Semée. Sown broadcast or scattered, without any fixed number, over the field; parts of the charge thus semée appearing at the border-lines of the composition. See Nos. [247], [250], [252].
Shake-fork. Resembles the letter Y, but does not extend to the margin of the shield, and is pointed at its extremities.
Shamrock. A trefoil plant or leaf, the badge of Ireland.
Shield, or Escutcheon. The Shield of Heraldry is fully described at [page 32]. See also Nos. [27], [39]-[49].
Ship. Sometimes blazoned as a modern vessel, but sometimes also as an ancient galley. See Lymphad.
Shoveller. A species of duck.
Simple Quartering. Dividing a shield quarterly, with the quartering of any of the quarters. See Quartering.