オール

おーる
noun
oar; all (loanword)
1. oar (for rowing a boat)
A long pole with a flat blade at one end, used to row a boat by pulling against the water. From English 'oar'.
オールで(ふね)()いだ。
I rowed the boat with the oars.
オールが()れてしまった。
The oar broke.
(みずうみ)でボートを()りて、オールを使(つか)って()こう(ぎし)まで(わた)った。
We rented a boat at the lake and used the oars to cross to the opposite shore.
2. all; entirely (used as prefix or in compounds)
From English 'all'. Used as a prefix in compounds like オールラウンド (all-around), and casually to mean 'staying out / staying up all night' as in {オール}する.
オールラウンドな選手(せんしゅ)だ。
He's an all-around player.
昨日(きのう)はオールしてしまった。
I ended up staying up all night yesterday.
友達(ともだち)(あさ)までカラオケでオールしたのは学生(がくせい)時代(じだい)以来(いらい)だ。
Doing karaoke all night with friends — I haven't done that since my student days.

Loanword that covers two unrelated English sources: 'oar' and 'all'. Context makes the meaning clear.

SENSE 1 (oar):

  • オールを()ぐ: to row with oars
  • オールが()れる: the oar breaks

SENSE 2 (all):

  • オールラウンド: all-around
  • オールスター: all-star
  • オールマイティ: almighty; versatile
  • オールする: to stay out / stay up all night (casual, especially among students)

DISAMBIGUATION:
Other English homophones — 'all', 'ore', 'goal' — are usually rendered with different katakana or pronunciation to avoid confusion. The 'oar' sense is the main concrete noun usage.