The catfish Pangasianodon hypophthalmus.
"The local market sells fresh tra, which is a type of large freshwater catfish found in Southeast Asia."
"The train left without me, leaving everyone frustrated by their delay."
A meaningless syllable used when singing a tune.
"The choir hummed a soft tra while waiting for the conductor to raise his baton."
The word tra comes from the Vietnamese language and originally referred to a specific type of fish. It was borrowed into English as part of the name for this freshwater catfish found in Southeast Asia.