Sentence:  It was flood-tide along Fifth Avenue; motor, brougham, and victoria swept by on the glittering current; pretty women glanced out from limousine and tonneau; young men of his own type, silk-hatted, frock-coated, the <WSD>crooks</WSD> of their walking sticks tucked up under their left arms, passed on the Park side. 
Meaning of the word marked with <WSD> tags:  A bent or curved part; a curving piece or portion (of anything).