Cato's dozen

• Roman dozen
• Reading on some clocks
• Midnight marking
• The cardinal number that is the sum of eleven and one
• I's predecessor, at times
• It may be to the left of an "I"
• VI plus VI
• Top of a clock dial
• Nero's noon

WordNet Word definitions in WordNet
adj. denoting a quantity consisting of 12 items or units [syn: twelve , 12 , dozen ]