1. (n.)tick a slight, sharp, recurring click, tap, or beat, as of a clock.
2. tick Brit. Informal. a moment or instant.
3. tick a small dot, mark, or electronic signal, as used to mark off an item on a list, serve as a reminder, or call attention to something.
4. tick a movement in the price of a stock, bond, or option.
5. tick the smallest possible tick on a given exchange.
6. tick a small contrasting spot of color on the coat of a mammal or the feathers of a bird.
7. (v.i.)tick to emit a tick, like that of a clock.
8. tick to pass as with ticks of a clock: The hours ticked by.
9. (v.t.)tick to sound or announce by a tick or ticks: The clock ticked the minutes.
10. tick to mark with a tick; check (usu. fol. by off): to tick off the items on the list.
11. tick Slang.
12. tick to make angry.
13. (n.)tick any of numerous bloodsucking arachnids of the order Acarina, related to but larger than mites, having a barbed proboscis for attachment to the skin: some are disease vectors.
14. (n.)tick the cloth case of a mattress, pillow, etc., containing hair, feathers, or the like.
Etymology: (1425–75; late ME tikke, teke, tyke; cf. MD, MLG tēke, OHG ziahha, ziecha tick, pillowcase)
Definition of 'Tick'
Princeton's WordNet
1. (noun)tick, ticking a metallictapping sound "he counted the ticks of the clock"
2. (noun)tick any of two families of small parasitic arachnids with barbed proboscis; feed on blood of warm-blooded animals
3. (noun)check mark, check, tick a mark indicating that something has been noted or completed etc. "as he called the role he put a check mark by each student's name"
5. (verb)click, tick make a clicking or tickingsound "The clock ticked away"
6. (verb)tick, ticktock, ticktack, beat make a sound like a clock or a timer "the clocks were ticking"; "the grandfather clock beat midnight"
7. (verb)tick, retick sew "tick a mattress"
8. (verb)check, check off, mark, mark off, tick off, tick put a check mark on or near or next to "Please check each name on the list"; "tick off the items"; "mark off the units"
3. (noun)tick the sound a clock makes the tick of the clock
4. tick √ ); = check
Definition of 'Tick'
Webster Dictionary
1. (noun)Tick credit; trust; as, to buy on, or upon, tick
2. (noun)Tick any one of numerous species of large parasitic mites which attach themselves to, and suck the blood of, cattle, dogs, and many other animals. When filled with blood they become ovate, much swollen, and usually livid red in color. Some of the species often attach themselves to the human body. The young are active and have at first but six legs
3. (noun)Tick any one of several species of dipterous insects having a flattened and usually wingless body, as the bird ticks (see under Bird) and sheep tick (see under Sheep)
4. (noun)Tick the cover, or case, of a bed, mattress, etc., which contains the straw, feathers, hair, or other filling
5. (noun)Tick ticking. See Ticking, n
6. (noun)Tick a quick, audible beat, as of a clock
7. (noun)Tick any small mark intended to direct attention to something, or to serve as a check
8. (noun)Tick the whinchat; -- so called from its note
Definitions of Tick 
Afrikaans: tik
Arabic: قُرادَه
Bulgarian: тиктакане
Brazilian: tiquetaque
Czech: tikání
German: das Ticken
Danish: tik
Greek: χτύπος, τικ τακ
Spanish: tictac
Estonian: tiksumine
Farsi: صدای تک تک
Finnish: tikitys
French: tic-tac
Hebrew: טִקטוּק
Hindi: घड़ी की टिकटिक
Croatian: kuckanje (sata)
Hungarian: ketyegés
Indonesian: detikan
Icelandic: tif
Italian: tic, tic-tac
Japanese: チクタク
Korean: (시계 등의) ‘똑딱’ 소리
Lithuanian: tiksėjimas
Latvian: tikšķēšana
Malay: bunyi detik
Dutch: getik
Norwegian: tikking
Polish: tykanie
Portuguese: tiquetaque
Romanian: tic-tac
Russian: тиканье
Slovak: tikanie
Slovenian: tiktakanje
Serbian: tik, tak
Swedish: tickande
Thai: เสียงดังติ๊ก ๆ
Turkish: tıkırtı, tik-tak sesi
Taiwanese: 鐘錶的滴答聲
Ukrainian: цокання
Urdu: گھڑي وغيرہ کي مسلسل آواز
Vietnamese: tiếng tích tắc
Chinese: 钟表的滴答声
