Line drawn under this word of doubt over muse parting nicer lips

• Part of a fraction
• Almost dead, one inspiring start of recovery: it’s on the line
• Upper figure in a fraction
• The dividend of a fraction

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Numerator \Nu"mer*a"tor\, n. [L. numerator: cf. F. num['e]rateur.] One who numbers. (Math.) The term in a fraction which indicates the number of fractional units that are taken. Note: In a vulgar fraction the numerator is written above a line; thus, ...

WordNet Word definitions in WordNet
n. the dividend of a fraction

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1540s, from Late Latin numerator "counter, numberer," agent noun from numerat- , past participle stem of numerare "to count, number," from numerus "a number" (see number (n.)).

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ AD534 used as a divider, providing differential operation on both numerator and denominator Fig. 6. ▪ If the value of the whole expression,, is to remain constant then the value of the numerator must also fall. ▪ Such splitting ...

Wiktionary Word definitions in Wiktionary
n. 1 (context arithmetic English) The number or expression written above the line in a fraction (thus 1 in ½). 2 An enumerator; someone who counts things.