Pronunciation guide: IPA symbols, stress and word endings

θ	thin	ð	this	ʃ	she	ʒ	measure
tʃ	church	dʒ	judge	ŋ	sing	j	yes

p b t d k g f v s z h m n l r w sound as in ordinary English spelling.

ˈ main stress, before the stressed syllable: /ˈwɔːtə/ water · ˌ lighter (secondary) stress: /ˌʌndəˈstænd/ understand
ː a long vowel · (r) an r said only in accents that pronounce it (most American, Scottish, Irish)

-s / -es (plurals; he/she form of verbs): /s/ after voiceless sounds (cats), /z/ after voiced (dogs), /ɪz/ after s, z, sh, ch, j sounds (buses, watches). Spelling: -es after s, x, z, ch, sh; consonant + y → -ies (city → cities).
-ed (past): /t/ after voiceless sounds (walked), /d/ after voiced (played), /ɪd/ after t or d (wanted). Spelling: love → loved, stop → stopped, carry → carried.
-ing: make → making, run → running, see → seeing.
Irregular: go, went, gone · be, was, been · see, saw, seen · man → men · child → children · mouse → mice.
Older (King James) forms: -eth = -s (he loveth = he loves) · -est with “thou” (thou lovest) · spake = spoke.

cannonball

/ˈkænənˌbɔːl/ noun, verb

Forms cannonballs cannonballing cannonballed

noun A spherical projectile fired from a smoothbore cannon.
noun An explosive-filled hollow iron sphere fused through a hole and intended to explode at a calculated distance rather than explode on impact.
noun (diving) The act of jumping (typically into a swimming pool) with the legs bent and the arms wrapped around the knees to create a large splash, mimicking the flight and shape of a cannonball.
noun (slang, figuratively) Something that moves fast, especially a fast train. “Meetings of the model train club always begin with the song "Wabash Cannonball".”
noun (tennis) A served ball that travels with great speed and describes little or no arc in flight.
verb (intransitive) To jump or dive into water, performing a cannonball landing. “He cannonballed into the pool, drenching us all.”
verb (intransitive) To career; to move rapidly. “The car cannonballed past.”

Synonyms

From cannon + ball from being a round ball that is fired from a cannon.

Sources: Wiktionary · WordNet 3.0 — from the Wiktionary entry “cannonball”, CC BY-SA 4.0. Details