What is the meaning of No_sooner?

Short in length of time from the present.

Early.

Used as an alternative to express 'to be going to' in the form 'to be soon to'.

Immediately, instantly.

Within a short time; quickly.

Early.

Readily; willingly; used with would, or some other word expressing will.

to say

vein, blood vessel

to be yellow

Alternative form of zoon

Source: wiktionary.org