1. The female of the sheldrake.

2. The sheldrake.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• ahelduck,
• zhelduck,
• xhelduck,
• dhelduck,
• ehelduck,
• whelduck,
• sgelduck,
• sbelduck,
• snelduck,
• sjelduck,
• shelduc,
• shleduck,
• shelduuck,
• shelduckk,
• sheldouck,
• scelduck,
• shielduck,
• shelleduck,
• shelduik,
• shelduack

• sheilds,
• shields.

The adjective form of the word "shelduck" is "shelduck". It remains the same in both noun and adjective forms.

The plural of the "shelduck" can be the "shelducks".

The singular of the "shelduck" can be the "shelduck".