integer, whole number - any of the natural numbers (positive or negative) or zero

binary digit - either 0 or 1 in binary notation

octal digit - a digit from 0 to 7 in octal notation

decimal digit - a digit from 0 to 9 in decimal notation

significant digit, significant figure - any digit of a number that is known with certainty; any digit of a number beginning with the leftmost non-zero digit and ending with the rightmost non-zero digit (or a zero considered to be the exact value); "he calculated the answer to four significant figures"

0, cypher, nought, zero, cipher - a mathematical element that when added to another number yields the same number

1, ace, one, single, unity, I - the smallest whole number or a numeral representing this number; "he has the one but will need a two and three to go with it"; "they had lunch at one"

2, II, two, deuce - the cardinal number that is the sum of one and one or a numeral representing this number

3, deuce-ace, III, tercet, ternary, ternion, terzetto, three, threesome, trey, triad, trine, trinity, trio, triplet, troika, tierce, leash - the cardinal number that is the sum of one and one and one

IV, Little Joe, quadruplet, quartet, quatern, 4, four, quaternion, quaternity, tetrad, foursome, quaternary - the cardinal number that is the sum of three and one

5, cinque, fin, five, fivesome, Little Phoebe, pentad, Phoebe, quint, quintuplet, quintet, V - the cardinal number that is the sum of four and one

6, Captain Hicks, half a dozen, hexad, sestet, sextuplet, sise, six, sixer, VI, sextet - the cardinal number that is the sum of five and one

7, heptad, septet, seven, sevener, VII - the cardinal number that is the sum of six and one

8, eight, eighter, eighter from Decatur, octad, octet, octonary, ogdoad, VIII - the cardinal number that is the sum of seven and one

9, ennead, IX, Nina from Carolina, nine, niner - the cardinal number that is the sum of eight and one

linear unit - a unit of measurement of length

craniate, vertebrate - animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium

phalanx - any of the bones (or phalanges) of the fingers or toes

appendage, extremity, member - an external body part that projects from the body; "it is important to keep the extremities warm"

finger - any of the terminal members of the hand (sometimes excepting the thumb); "her fingers were long and thin"

toe - one of the digits of the foot

nail - horny plate covering and protecting part of the dorsal surface of the digits