Index: wp-includes/wp-db.php
===================================================================
--- wp-includes/wp-db.php	(revision 18972)
+++ wp-includes/wp-db.php	(working copy)
@@ -409,6 +409,7 @@
 	 * @see wpdb:prepare()
 	 * @see wpdb:insert()
 	 * @see wpdb:update()
+	 * @see wpdb:delete()
 	 * @see wp_set_wpdb_vars()
 	 * @access public
 	 * @var array
@@ -1252,7 +1253,48 @@
 		$sql = "UPDATE `$table` SET " . implode( ', ', $bits ) . ' WHERE ' . implode( ' AND ', $wheres );
 		return $this->query( $this->prepare( $sql, array_merge( array_values( $data ), array_values( $where ) ) ) );
 	}
+	
+	/**
+	 * Delete a row in the table
+	 *
+	 * <code>
+	 * wpdb::delete( 'table', array( 'ID' => 1 ) )
+	 * wpdb::delete( 'table', array( 'ID' => 1 ), array( '%d' ) )
+	 * </code>
+	 *
+	 * @since 2.5.0
+	 * @see wpdb::prepare()
+	 * @see wpdb::$field_types
+	 * @see wp_set_wpdb_vars()
+	 *
+	 * @param string $table table name
+	 * @param array $where A named array of WHERE clauses (in column => value pairs). Multiple clauses will be joined with ANDs. Both $where columns and $where values should be "raw".
+	 * @param array|string $where_format Optional. An array of formats to be mapped to each of the values in $where. If string, that format will be used for all of the items in $where.  A format is one of '%d', '%f', '%s' (integer, float, string).  If omitted, all values in $where will be treated as strings.
+	 * 	A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $where will be treated as strings unless otherwise specified in wpdb::$field_types.
+	 * @return int|false The number of rows updated, or false on error.
+	 */
+	function delete( $table, $where, $where_format = null) {
+		if ( ! is_array( $where ) )
+			return false;
+		
+		$bits = $wheres = array();
 
+		$where_formats = $where_format = (array) $where_format;
+		foreach ( (array) array_keys( $where ) as $field ) {
+			if ( !empty( $where_format ) )
+				$form = ( $form = array_shift( $where_formats ) ) ? $form : $where_format[0];
+			elseif ( isset( $this->field_types[$field] ) )
+				$form = $this->field_types[$field];
+			else
+				$form = '%s';
+			$wheres[] = "`$field` = {$form}";
+		}
+
+		$sql = "DELETE FROM `$table` WHERE " . implode( ' AND ', $wheres );
+		return $this->query( $this->prepare( $sql, $where ) );
+	}
+	
+	
 	/**
 	 * Retrieve one variable from the database.
 	 *