nimesa
nimeṣa-ādiḥ — beginning with minute parts of time;
SB 10.3.26
kṣaṇa-lava-nimeṣa — the kṣaṇa, lava and nimeṣa (the smallest fractions of time);
SB 12.6.67
nimeṣa — a blink;
CC Adi 4.151
nimeṣa-ardha — half a moment;
Bs 5.56