Yippee - at long last Mrs Worrier's got a new hip

. To celebrate, clues to 12 words which all have the letters "h", "i" and "p", in that order, once and once only, but not necessarily together.
-1. Seal in heat-sensitive film
-2. Low plaintive cry
-3. Very short or small person
-4. Disadvantage
-5. Viral disease
-6. Diaphragmatic spasm with glottal closure
-7. Member of the species
Pan troglodytes-8. Instrument used in geodetic surveying
-9. Emit bird-like noise
-10. Medical instrument used to examine the nasal passages
-11. Injury of the neck
-12. Means of aerial transport