Early Quenya
qiri-
verb. to stir (make spin)
qiri-
verb. to murmur
qirna-
verb. to stir (make spin)
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
A verb appearing as ᴱQ. qiri- or qirna- in the Qenya Lexicon of the 1910s glossed “stir (make spin)” under the early root ᴱ√QIŘI [QIÐI] (QL/77).
Neo-Quenya: A similar root √KWER “revolve” appeared in Tolkien’s later writings (PE17/65), so I think a Neo-Root ᴺ√KWIR “stir, spin” might be used as a variant of that root. I would use ᴺQ. quir- “to stir, make spin” as its Quenya verb form.