Is “Queuing” a Scrabble word?
Yes
QUEUING
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Queuing
verb
1.To put oneself or itself at the end of a waiting line.
2.To arrange themselves into a physical waiting queue.
3.To add to a queue data structure.
Synonyms: join, line up
noun
1.The act of placing something in a queue.