Dictionary Definition:
otu 1
ótu m. (√ve), the woof or cross-threads of a web RV. vi, 9, 2 AV. xiv, 2, 51TS. vi Kauś.
• (u), n. N. of a Sāman ĀrshBr.
otu 2
otu us mf. (√av Uṇ. i, 70), a cat Comm. on Pāṇ. 6-1, 94