This literally translates to "May light be upon you!". It's a more formal and traditional greeting used to welcome someone to a place or event.
Here are some other ways to say welcome in Tigrinya:
* "ኣብ ትሕቲ ሰላም ኣምጻ!" (ab tihti selam amtsa) - "Welcome under peace!"
* "ብሰላም ኣምጻ!" (biselam amtsa) - "Welcome with peace!"
* "ብሓጎስ ኣምጻ!" (bihagos amtsa) - "Welcome with joy!"
You can also use the more casual "ኣብ ትሕቲ ሰላም" (ab tihti selam) - "Under peace", which is a general greeting meaning "hello" or "good day".