íṣu us mf. an arrow
RV. AV. VS. MBh. Ragh. Śak. &c
• (in mathematics) a versed sine
• N. of a Soma ceremony KātyŚr.
• the number five Sāh.
• N. of a particular constellation VarBṛ. xii, 7. [According to Dayānanda iṣu may mean 'ray of light'
• Gk. ? ; [168, 3] Zd. ishu.] 

iṣu iṣu-dhi, &c. See 1. iṣ