Yes, oboe is in the scrabble dictionary

...and is worth 7 points by itself if you played it.

Oboe Definition

noun

A reed stop in an organ that produces a sound similar to that of the oboe.
A slender woodwind instrument with a conical bore and a double-reed mouthpiece, having a range of three octaves and a penetrating, poignant sound.
A double-reed woodwind instrument having a conical tube, a brilliant penetrating tone, and a usual range from B flat below middle C upward for over 2 octaves.
A woodwind instrument with a double-reed mouthpiece, a slender tubular body, and holes stopped by keys.