Similar Words to Swelling:

Bulge
Bump
Excrescence
Extrusion
Gibbosity
Gibbousness
Hump
Intumescence
Intumescency
Jut
Lump
Prominence
Protrusion
Protuberance
Puffiness

Examples:

1. Or Or with Theocritus, "It is Spring everywhere, "and in the pastures the udders are swelling with milk and the lambkins are suckling."

Definitions of Swelling:

1. An abnormal protuberance or localized enlargement
2. Something that bulges out or is protuberant or projects from its surroundings
3. The increase in volume of certain substances when they are heated (often accompanied by release of water)