A hoop used by coopers to draw together the ends of barrel staves, to allow the hoops to be slipped over them.

A lighted coal left smothered in embers overnight, about which kindling wood is gathered in the morning.

portal vein

To occupy places of advantage, power, or defence.

(electronics) a logic gate performing a Boolean logic equivalence operation; an XNOR gate.

(electronics) a logic gate whose output is TRUE when the two inputs are different; a Boolean logic XOR gate.

(electronics) a logic gate performing a Boolean logic OR operation

(electronics) a logic gate performing a Boolean logic NOR operation

(electronics) a logic gate performing a Boolean-logic NOT operation

(electronics) a logic gate performing a Boolean logic XNOR operation; an equivalence gate