Of falling: headlong. Obsolete. rare.

Diving; rushing or falling forward or downward; pitching; sinking or falling steeply.

Of a fall, dive, etc.: that involves falling or plunging headlong. Also in figurative contexts.

Rising and falling; plunging forwards and downwards; (of a horse) bucking.

Characterized by falling or diving head-foremost. Also figurative: precipitate, hasty; reckless. Now rare.

Characterized by the head going first or in front of the rest of the body; esp. (of a fall, dive, etc.) that involves falling or plunging head first…