| HARDHEADS | • hardheads n. Plural of hardhead. • hard␣heads n. Plural of hard head. • HARDHEAD n. any of several fishes with armoured heads. |
| HARDIHEAD | • hardihead n. (Obsolete) Alternative form of hardihood. • hardihead n. (Countable) Alternative form of hardyhead (“the fish”). • HARDIHEAD n. (archaic) hardihood, boldness, also HARDIHOOD, HARDIMENT. |
| HARDSHELL | • hardshell adj. Having a tough outer shell. • hardshell adj. (Figuratively) Rigid or uncompromising in principles, especially in religion or politics. • hard-shell adj. Alternative form of hardshell. |
| HARSHENED | • harshened v. Simple past tense and past participle of harshen. • HARSHEN v. to make harsh. |
| HARUMPHED | • harumphed v. Simple past tense and past participle of harumph. • HARUMPH v. to clear one's throat noisily in annoyance, also HARRUMPH. |
| HEADCHAIR | • headchair n. (Railways) Part of a block switch on a railway line that the ends of the moveable rails rest on, and… • HEADCHAIR n. a high-backed chair with a headrest. |
| HEADREACH | • head␣reach n. (Nautical) The distance to windward traversed by a vessel while tacking. • HEADREACH v. to make distance to windward in tacking. |
| HEATHBIRD | • HEATHBIRD n. the black grouse. |
| HEATHERED | • heathered adj. Covered with heather. • heathered adj. (Textiles) Having flecks produced by interwoven yarns of mixed colours. • HEATHERED adj. covered with heather. |
| HEMIHEDRA | • hemihedra n. Plural of hemihedron. • HEMIHEDRON n. a solid derived in a hemihedral way, such as a tetrahedron. |
| HEXACHORD | • hexachord n. (Music) A series of six tones denoted with the syllables ut-re-mi-fa-sol-la separated by seconds, the… • HEXACHORD n. a series of six notes, with a semitone between the third and fourth, the other intervals being whole tones. |
| HEXAHEDRA | • hexahedra n. Plural of hexahedron. • HEXAHEDRON n. a solid body of six sides or faces. |
| HOARHEADS | • hoarheads n. Plural of hoarhead. • HOARHEAD n. a hoary-headed old man. |
| HOLOHEDRA | • holohedra n. Plural of holohedron. • HOLOHEDRON n. a geometrical form possessing the property of holohedrism. |
| HORNYHEAD | • hornyhead n. Any North American chubs of the genus Nocomis, especially Nocomis biguttatus. • HORNYHEAD n. a North American river chub. |
| HORSEHEAD | • horsehead n. The head of a horse. • horsehead n. A pump for pumping oil from an oil well. • horsehead n. A steel girder supporting the roof of a mine tunnel. |
| RHACHIDES | • rhachides n. Plural of rhachis. • RHACHIS n. (Greek) the spinal column, also RACHIS. |
| RHAPHIDES | • rhaphides n. Plural of rhaphide. • rhaphides n. Plural of rhaphis. • RHAPHIS n. (Greek) a needlelike crystal, usually of calcium oxalate, occurring in plant cells, also RAPHIDE, RAPHIS, RHAPHIDE. |
| SHORTHEAD | • short␣head n. (Horse racing) A distance of less than the length of a horse’s head. • SHORTHEAD n. a fish, a species of American redhorse. |