/shak"oh, shay"koh/ , n. , pl. shakos, shakoes .
a military cap in the form of a cylinder or truncated cone, with a visor and a plume or pompon.
[ 1805-15; schako csákó, short for csákós ( süveg ) peaked (cap), adj. deriv. of csák peak zacke peak, point; see TACK 1 ]