27 

the hand-shape-sign: two fingers are extended upward and bend like this; others touch each other
(この２本指を上に伸ばして先を曲げ、他は指先を合わせる)
the hand-movement-sign: two times little pushes at the same position (同位置で２度軽い押し)

name: [zi] zi sound of zip (ズィ)

ASCII: " (the similar looking)

phonetic: [function]:
a phonetic symbol with this in a C-c is pronounced combining with the sound
of the left next symbol at the same time.
(直前の記号と同時に発音に働かせることを示す)

definition (single): plural(複数)

{gd,27} ... : repeat to be or to do ... / become or do ... again ( C-c with d-verb symbol )
(また・・する/になる)
{ge,27} ... : repeat to make someone/something into ... situation / do ... again
(また・・する/させる)

function (in C-c):

1) To represent the other noun character in a C-c as plural.
(名詞に重ねると、それが複数であることを表示)
2)  When #27 is compounded with a character meant an action, it adds the meaning of 'repeating'.
(「行為」に重ねると、繰り返す意味を添加)
3) Specified from 1), 2) case (１，２から意味が特化した利用)

examples of C-c:

To represent the other noun character in a C-c as plural. (名詞に重ねると、それが複数であることを表示)

For plural pronouns (複数代名詞):

{61,34,27} : plural you or your (あなたがた)
{62,34,27) : we, our, us (私たち)
{19,34,27} : the ladies, the females ( including animals ) (彼女たち)
{20,34,27} : the men, the males ( including animals ) (彼ら)
{01,34,27) : they, their, them ( the things or the people( regardless of gender ) pointed in a topic ) (それら)
{17,34,27} : those ( pointing things which are far away ) (あれら)
{18,34,27}  : these ( pointing things which is close by ) (これら)

For general term or when it's clear of the amount/numbers by other modifier/
qualifier, you need not to compound #27. Only when you need to express that
it's plural by its own character, #27 is compounded with that character.

(一般用語や数量にかかわる修飾語で複数とわかる場合には２７をつける必要はなく、
１字だけで内容が複数と表示したいときのみ加える)
e.g. {65(human/person),27}: people (人々)

When #27 is compounded with a character meant an action, it adds the meaning of 'repeating'.

「行為」に重ねると、くりり返す意味を添加
{56(action),27}: repeat (v.  with #gd) (くり返し)
{02one,27}: another (もう一つの)
{38(made),27}: remade, remake( vt. with #ge) (作り直し)
{27,{09,38,50}(production)}: reproduction (再生産)
{44(open),27}: reopen (再開)
{{53(situation),45(relation)}(meeting),27}: reunion (再会)
{45(relation),27}: coming back relation again (復縁・再関係)
{{17(up),42(wave)}(to broach),27}: re-broach (再浮上)
{16(divided),27}: re-divided (再分割)
{23(change),27}: re-change (再変化)
{25,38,27again}: repairing/ repair (修理)
...etc.

In the following case, #27 specifies the meanings of C-c (意味をやや特化する場合)

{gb (conjunction), 27(plural)}: and also, /..., too (そしてまた〜も)
{27,36(time)}:  repeating times = again (再び)
{{02,23}(light),27}: twinkle, dazzle (light to many directions) (きらきらする輝き)
{27,26( multiply }: square (二乗､平方)
{n3,27,26}: cube (３乗)
= n3 {33,36}( times ) {33,26}( the product ) of 2 = =
{{27,26},22( origin )}: square root (平方根)