sound meaning
EN
[saʊnd] [-aʊnd] [(ʂaut)] 
US WSound
- In physics, sound is a vibration that propagates as a typically audible mechanical wave of pressure and displacement, through a medium such as air or water.
EN Sound 
- NounPLsounds
- A sensation perceived by the ear caused by the vibration of air or some other medium.
- He turned when he heard the sound of footsteps behind him . Nobody made a sound.
- A vibration capable of causing such sensations.
- (music) A distinctive style and sonority of a particular musician, orchestra etc.
- Noise without meaning; empty noise.
- (geography) A long narrow inlet, or a strait between the mainland and an island; also, a strait connecting two seas, or connecting a sea or lake with the ocean.
- Puget Sound; Owen Sound
- The air bladder of a fish.
- Cod sounds are an esteemed article of food.
- A cuttlefish.
- A long, thin probe for sounding body cavities or canals such as the urethra.
- A sensation perceived by the ear caused by the vibration of air or some other medium.
- VerbSGsoundsPRsoundingPT, PPsounded
- VI To produce a sound.
- When the horn sounds, take cover.
- (copulative) To convey an impression by one's sound.
- He sounded good when we last spoke.
- That story sounds like a pack of lies!
- VI To be conveyed in sound; to be spread or published; to convey intelligence by sound.
- VI OBS To resound.
- VI (law, often with in) To arise or to be recognizable as arising in or from a particular area of law.
- [T]here can be no doubt that claims brought pursuant to § 1983 sound in tort.
- VT To cause to produce a sound.
- He sounds the instrument.
- VT (phonetics, of a vowel or consonant) To pronounce.
- The "e" in "house" isn't sounded.
- VI Dive downwards, used of a whale.
- The whale sounded and eight hundred feet of heavy line streaked out of the line tub before he ended his dive.
- To ascertain, or try to ascertain, the thoughts, motives, and purposes of (a person); to examine; to try; to test; to probe.
- When I sounded him, he appeared to favor the proposed deal.
- test; ascertain the depth of water with a sounding line or other device.
- Mariners on sailing ships would sound the depth of the water with a weighted rope.
- (medicine) To examine with the instrument called a sound, or by auscultation or percussion.
- to sound a patient, or the bladder or urethra
- VI To produce a sound.
- AdjectiveCOMsounderCOMmore soundSUPsoundestSUPmost sound
- Healthy.
- He was safe and sound.
- In horse management a sound horse is one with no health problems that might affect its suitability for its intended work.
- Complete, solid, or secure.
- Fred assured me the floorboards were sound.
- (mathematics, logic) Having the property of soundness.
- (Britain) SLA Good.
- "How are you?" - "I'm sound."
- That's a sound track you're playing.
- (of sleep) Quiet and deep. Sound asleep means sleeping peacefully, often deeply.
- Her sleep was sound.
- Heavy; laid on with force.
- a sound beating
- Founded in law; legal; valid; not defective.
- a sound title to land
- Healthy.
- AdverbCOMsounderCOMmore soundSUPsoundestSUPmost sound
- Interjection
- (Britain) SLA Yes; used to show agreement or understanding, generally without much enthusiasm.
- "I found my jacket." - "Sound."
- (Britain) SLA Yes; used to show agreement or understanding, generally without much enthusiasm.
- More Examples
- Used in the Middle of Sentence
- Aeolism, or the emphasis on the form or sound of words per se rather than on their meaning or sense, presently flourishes under many dignified guises.
- Every morning the soft crinkly sound of saranwrap that she had molded to her body every night, a cure for eczema.
- That beeping sound indicates that the truck is backing up.
- Used in the Beginning of Sentence
- Sound my barbaric yawps over the roofs of the world - Walt Whitman
- Sound off like you got a pair! (drill sergeant in Full Metal Jacket)
- Sound engineering has progressed greatly since the early days of the phonograph.
- Used in the Ending of Sentence
- I'm a light sleeper: I get woken up by the smallest of sounds.
- The archer's arrow flew past us with a whooshy sound.
- He combines the best of classical music with the excitement of the modern sound.
- Used in the Middle of Sentence
Definition of sound in English Dictionary
- Part-of-Speech Hierarchy
- Adjectives
- Adverbs
- Interjections
- Nouns
- Countable nouns
- Countable nouns
- Verbs
- Copulative verbs
- Intransitive verbs
- Transitive verbs
- Copulative verbs
- Adjectives
Source: Wiktionary
Grammatically, this word "sound" is an adjective. It's also an adverb. It's also an interjection. It's also a noun, more specifically, a countable noun. It's also a verb, more specifically, a copulative verb, an intransitive verb and a transitive verb.