whatchamacallit, X

once again, once more

turn

a turn, times around something

turn; revolve / return; go back / (dated) Hui; Islam / time; occasion / Alternative form of 蛔 (kai, “roundworm; intestinal worm”)

episode, chapter / time, occasion / turn, round / (baseball, softball) inning

turn; turn around

what

What?, Huh?

what / that thing (used in place of words you can't remember at the moment.)