Defn: Having two heads; bicipital. Double-headed rail (Railroad), a rail whose flanges are duplicates, so that when one is worn the other may be turned uppermost.

DOUBLEHEARTED
Dou"ble*heart"ed, a.

Defn: Having a false heart; deceitful; treacherous. Sandys.

DOUBLE-HUNG
Dou"ble-hung`, a.

Defn: Having both sashes hung with weights and cords; — said of a window.

DOUBLE-LOCK
Dou"ble-lock`, v. t.

Defn: To lock with two bolts; to fasten with double security. Tatler.

DOUBLE-MILLED
Dou"ble-milled`, a.

Defn: Twice milled or fulled, to render more compact or fine; — said of cloth; as, double-milled kerseymere.

DOUBLEMINDED
Dou"ble*mind"ed, a.