The most common and most likely answer to this crossword clue is the 3 letter word AVE
A
V
E
More clues leading to the result AVE
- Cockney's own greeting
- Welcome spelunker who’s out of credit
- Prayer, gravestone’s inscription?
- RC recitation, mean if shortened?
- Hail penetrating cavern
- Prayer kept up by the Vatican
- Welcome side-splitting 1960s court favourite
- Eastender’s own classical welcome
- Hail, mighty cruciverbalist, he’s no beginner
- Greeting a famous victory
Buddy explains!

The straight part
We know that "classical welcome" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case classical welcome = ave.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does AVE mean?
AVE noun- An Ave Maria.
- A reverential salutation.
- A broad street, especially one bordered by trees.
- A way or opening for entrance into a place; a passage by which a place may be reached; a way of approach or of exit.
- The principal walk or approach to a house which is withdrawn from the road, especially, such approach bordered on each side by trees; any broad passageway thus bordered.
- A method or means by which something may be accomplished.
- (urban toponymy) A street, especially, in cities laid out in a grid pattern, one that is in a particular side of the city or that runs in a particular direction.
- The arithmetic mean.
- Any measure of central tendency, especially any mean, the median, or the mode.
- (marine) Financial loss due to damage to transported goods; compensation for damage or loss.
- Customs duty or similar charge payable on transported goods.
- Proportional or equitable distribution of financial expense.
- An indication of a player's ability calculated from his scoring record, etc.
- (in the plural) In the corn trade, the medial price of the several kinds of grain in the principal corn markets.
- The service that a tenant owed his lord, to be done by the animals of the tenant, such as the transportation of wheat, turf, etc.