ˈdʒækɪt n. & v. --n. 1 a a sleeved
short outer garment. b a
thing worn esp.
round the torso for protection or
support (life-jacket). 2 a
casing or
covering, e.g. as insulation round a
boiler. 3 = dust-jacket. 4 the
skin of a
potato, esp.
when baked
whole. 5 an animal's
coat. --v.tr. (jacketed, jacketing)
cover with a jacket. øjacket potato a baked potato served with the skin
on. [ME f. OF ja(c)quet dimin. of jaque JACK(2)]