Meaning of TWO in English

I. ˈtü adjective

Etymology: Middle English twa, two, from Old English twā (feminine & neuter); akin to Old English twēgen two (masculine), tū (neuter), Old High German zwēne, Latin duo, Greek dyo

Date: before 12th century

1. : being one more than one in number

2. : being the second — used postpositively

section two of the instructions

II. pronoun, plural in construction

Date: before 12th century

1. : two countable individuals not specified

only two were found

2. : a small approximate number of indicated things

only a shot or two were fired

III. noun

( plural twos )

Date: 13th century

1. — see number table

2. : the second in a set or series

the two of spades

3. : a 2-dollar bill

4. : something having two units or members

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.