Related Clues:

• First, second, third could be such a numeral
• Number defining position in series
• Numerals such as first and second
• A number defining position in series
• Number defining thing's position in a series
• Number in a sequence
• Kind of number defining position in series
• Kind of number defining position in a series
• Number defining a thing's position in series
• Denoting a numerical order in a series
• First is the first one
• Thus I am obstructive and draw the line under pressure
• What a noise in an oral way for 11 and 33 across!
• One book might be of service to a number
• May be first, but no cardinal