tower meaning
EN
[ˈtaʊ.ə(ɹ)] [ˈtaʊ.ɚ] [-aʊ.ə(ɹ)] [-aʊə(ɹ)] [ˈtəʊ.ə(ɹ)] 
US WTower
- A tower is a tall structure, taller than it is wide, often by a significant margin. Towers are distinguished from masts by their lack of guy-wires and are therefore, along with tall buildings, self-supporting structures.
- Towers are specifically distinguished from 'buildings' in that they are not built to be habitable but to serve other functions.
- Towers can be stand alone structures or be supported by adjacent buildings or can be a feature on top of a large structure or building.
EN Tower 
- NounPLtowersSUF-er
- A very tall iron-framed structure, usually painted red and white, on which microwave, satellite, or other communication antennas are installed; radio tower.
- A similarly framed structure with a platform or enclosed area on top, used as a lookout for spotting fires, plane crashes, fugitives, etc.
- A water tower.
- A control tower.
- Any very tall building or structure; skyscraper.
- The Sears Tower
- (figuratively) Any item, such as a computer case, that is usually higher than it is wide.
- (informal) An interlocking tower.
- (figuratively) A strong refuge; a defence.
- (historical) A tall fashionable headdress.
- (obsolete) High flight; elevation.
- The sixteenth trump or Major Arcana card in many Tarot decks, deemed an ill omen.
- One who tows.
- A very tall iron-framed structure, usually painted red and white, on which microwave, satellite, or other communication antennas are installed; radio tower.
- VerbSGtowersPRtoweringPT, PPtowered
- (intransitive) To be very tall.
- Think of banking today and the image is of grey-suited men in towering skyscrapers. Its future, however, is being shaped in converted warehouses and funky offices in San Francisco, New York and London, where bright young things in jeans and T-shirts huddle around laptops, sipping lattes or munching on free food.
- (intransitive) To be high or lofty; to soar.
- (obsolete, transitive) To soar into.
- (intransitive) To be very tall.
- More Examples
- Used in the Middle of Sentence
- Bruce's daughter, Marjory, and his sister Mary, were likewise to be encaged, the former in the Tower of London, the latter in Roxburghe Castle.
- We fed the campfire until it became a towering inferno before us.
- “Marge Gets A Job” opens with the foundation of the Simpson house tilting perilously to one side, making the family homestead look like the suburban equivalent of the Leaning Tower Of Pisa.
- Used in the Ending of Sentence
- Numerous structural components of dams and hydropower facilities are vulnerable to heavy macrofouling by quagga mussels including intake tower trash racks and cooling towers.
- Used in the Middle of Sentence
Definition of tower in English Dictionary
- Part-of-Speech Hierarchy
- Morphemes
- Suffixes
- Words by suffix
- Words suffixed with -er
- Words suffixed with -er
- Words by suffix
- Suffixes
- Nouns
- Countable nouns
- Countable nouns
- Verbs
- Intransitive verbs
- Transitive verbs
- Intransitive verbs
- Morphemes
Source: Wiktionary
Grammatically, this word "tower" is a morpheme, more specifically, a suffixe. It's also a noun, more specifically, a countable noun. It's also a verb, more specifically, an intransitive verb and a transitive verb.