Common loanword for adhesive, used in everyday contexts like crafts and repairs. Often interchangeable with 接着剤 (せっちゃくざい), though グルー tends to be more casual.
See also: 接着剤
I used glue to stick the paper.
This glue dries quickly.
grue (fictional monster)
Refers to a fictional creature, notably from the Zork series of interactive fiction games. Rare outside of gaming or retro computing contexts.
In Zork, a grue lurks in the darkness.
I applied glue to the edge of the paper and stuck it down.
I glued the beads onto the fabric.
Please wait a little while for the glue to dry.
グルー means glue while グルーヴィー means groovy (rhythmically cool); learners may confuse them because both start with グルー despite having no semantic connection.
Borrowed from English 'glue'. The second sense is a direct borrowing of the fictional creature name 'grue'.