sward Look up sward at Dictionary.com
"grass-covered ground," O.E. sweard "skin, rind" (of bacon, etc.), from P.Gmc. *swarthu- (cf. O.Fris. swarde "skin of the head," M.Du. swarde "rind of bacon," Ger. Schwarte "thick, hard skin, rind," O.N. svörðr "walrus hide"). Meaning "sod, turf" developed c.1300, on notion of the "skin" of the earth (cf. O.N. grassvörðr, Dan. grønsvær "greensward").
thickset Look up thickset at Dictionary.com
mid-14c., thikke sette "with parts or things set close together" (of grass on a sward, etc.), from thick + set (v.). Meaning "stocky, strong and square-built" is recorded from 1724.