in heraldry, is by some supposed to represent a square rod or turf, and to be so called from delving, or digging. A delf tenne is due to him that revokes his own challenge, or any way goes from his word; and to such this is given as an abatement to the honour of their arms, and is always placed in the middle of the escutcheon. However, if two or more delfs are found in an escutcheon, they are not then to be looked upon as signs of an abatement, but of honour. Also, if it be of metal, or charged upon, it then becomes a charge of perfect bearing.

a city of the United Netherlands, in the province of Holland, eight miles north-east of Rotterdam, and thirty-fourth-west of Amsterdam: E. long. 4° 5', and N. lat. 52° 6'.