(Classical Japanese, archaic) to pile, add layers, stack, heap / (Classical Japanese, archaic) to repeat

heavy; important

contract, promise / to contract, to shorten / approximately, roughly

(business) one on one meeting between an employee and a superior

(classical mechanics) Newtonian mechanics

January

(Internet slang) first comment; (interjection) first!

(informal, chiefly in the negative) the slightest amount (in reference to one's knowledge, thought, etc.) / Used other than figuratively or idiomatically: see 一, ミリ.

relying heavily on

to rely heavily on