Definition of 押忍 (おっす)

interjection
hi!, yo!, hey man!, hey dude!(male term, usually kana)(greeting used between close friends)
Other readings:
おっす《押っ忍》
おす《押忍》
Related Kanji
push, stop, check, subdue, attach, seize, weight, shove, press, seal, do in spite of
endure, bear, put up with, conceal, secrete, spy, sneak