What is the meaning of ?

Obsolete spelling of se.

blood

Subordinative conjunction: to

Expresses desire or wish in optative or jussive constructions: let, may

Forms the “future imperative”.

Forms the first person plural hortative: let's

Forms the informal future tense together with the auxiliary o/or.

if, should

The imperative-like subjunctive construction is distinguished from the proper imperative in that it refers to something that the addressee is to do later, when the time comes, when is the case or after a succession of steps. Compare Să te întorci repede! (Come back quickly [after you leave]!) with Întoarce-te repede! (Come back quickly [now]!). Certain verbs, such as ști (know), lack a true imperative and only use the subjunctive with .

The formal way to form the future tense is to use vrea as an auxiliary verb with an infinitive.

An exception to the rigid pairing of with the subjunctive mood is found in the sense of “if, should”, where, until the 17th century, the indicative mood was employed. This usage is wholly obsolete.

Source: wiktionary.org