円柱: cylinder; column

爬虫: reptile

(slang) going to or being graduated from the same middle school (中学校)

(informal) Alternative form of よっしゃ (yossha)

(historical, Ancient Korea) mountain, hill

omelette (usually folded in half with or without stuffing).

(Classical Japanese) to gather and settle

a bug, insect, worm / a serpent, snake / (figurative): a worm (person living for only one thing) / (derogatory): a worm (despicable person) / a temperament (thought which is in the deep in mind)

the act of mixing; the state of being mixed; a mixing or mingling of two or more things, typically in an undesirable way

to mix one thing into another, typically in an undesirable way / to mingle, to become mixed, to get mixed, typically in an undesirable way